Catriona has 8 goldfish in her aquarium. She has 4 more angelfish than goldfish. Also, she has twice as many guppies as angelfish. How many fish does Catriona have in her aquarium?

How many angelfish does Catriona have? ** Catriona has 8 + 4 =

<<8+4=12>>12 angelfish. How many guppies does Catriona have? ** She also has 12 x 2 = <<12*2=24>>24 guppies. How many fish does Catriona have? ** Thus, she has 8 + 12 + 24 = <<8+12+24=44>>44 fish in her aquarium. #### 44 Carl has a jar full of marbles. He takes out 12 marbles to play a game with, but he accidentally drops them and 1/2 the marbles get lost. So Carl takes out 10 more marbles. While he is playing his game his mother comes home with another bag of marbles for him, which has 25 marbles in it. If Carl can't find his lost marbles, then how many marbles is he going to put in the jar after he plays his game, from both his original marbles and the new ones? How many marbles did Carl not lose? ** Carl starts with 12 marbles to play with but loses 1/2, 12 / 2 = <<12/2=6>>6 marbles Carl didn't lose. How many marbles does Carl take out? ** Carl takes out 10 more marbles, 6 + 10 = <<6+10=16>>16 marbles. How many marbles is Carl going to put in the jar after he plays his marbles game? ** Then Carl's mother brings him 25 new marbles to add to the 16 he has out of his jar, 25 + 16 = <<25+16=41>>41 marbles that Carl is going to put in his jar after he plays his marbles game. #### 41 Rene can finish reading 30 pages in 60 minutes. Lulu can read 27 pages in 60 minutes and Cherry can read 25 pages in 60 minutes. If they have been reading for 240 minutes now, how many pages have they finished reading in total? How many pages did Rene finish reading in 240 minutes? ** Rene finished 30 x 4 = <<30*4=120>>120 pages in 240 minutes. How many pages did Lulu finish reading in 240 minutes? ** Lulu finished 27 x 4 = <<27*4=108>>108 pages in 240 minutes. How many pages did Cherry finish reading in 240 minutes? ** Cherry finished 25 x 4 = <<25*4=100>>100 pages in 240 minutes. How many pages have they finished reading in total? ** Therefore they have finished a total of 120 + 108 + 100 = 328 pages in 240 minutes. #### 328 Sonja makes her own peanut butter with peanuts and oil in a blender. She uses a ratio of two ounces of oil to smooth out every eight ounces of peanuts. Her last batch of peanut butter weighed 20 ounces. How many ounces of oil did she use? How many ounces of oil does Sonja use? ** Sonja uses 2 ounces of oil for 8 ounces of peanuts to make 2 + 8 = 10 ounces of peanut butter. How many ounces of peanut butter did Sonja make? ** Her last batch weighed 20 ounces, so she made 20 / 10 = <<20/10=2>>2 times her ratio. How many ounces of oil did Sonja use? ** Thus, she used 2 * 2 = <<2*2=4>>4 ounces of oil. #### 4 On the first day of the journey, the Skipper sailed his ship halfway to the destination by traveling due east for 20 hours at a speed of 30 kilometers per hour, and then turned the ship's engines off to let them cool down. But while the engines were off, a wind storm blew his vessel backward in a westward direction. After the storm, the Skipper used his GPS device to determine the new location of the ship, and he discovered that he was only one-third of the way to his destination. How many kilometers had the ship been blown in a westward direction by the storm? How far did the ship travel on the first day? ** Traveling 20 hours due east at 30 kilometers per hour, the ship sailed 20*30=<<20*30=600>>600 kilometers the first day. How far is the ship from the start to the destination? ** If half the distance to the destination is 600 kilometers, then 2*600=<<2*600=1200>>1200 kilometers is the total distance from start to destination. How far is the ship from the start to the destination? ** One-third of the distance from start to destination is 1/3 * 1200 = <<1200/3=400>>400 kilometers. How many kilometers did the ship travel in a westward direction by the storm? ** Thus, the wind storm blew the ship in a westward direction for 600 - 400 = <<600-400=200>>200 kilometers. #### 200 Karen’s work tote bag is twice the weight of her husband Kevin’s briefcase when the briefcase is empty. When Kevin puts his laptop and work papers in his briefcase, it is twice the weight of Karen’s tote. Kevin’s work papers are a sixth of the weight of the contents of his full briefcase. If Karen’s tote weighs 8 pounds, how many more pounds does Kevin’s laptop weigh than Karen’s tote? How much does Kevin’s full briefcase weigh? ** Kevin’s full briefcase is 2 * 8 = <<2*8=16>>16 pounds. How much does Kevin’s empty briefcase weigh? ** His empty briefcase is 8 / 2 = <<8/2=4>>4 pounds. How much does the contents of Kevin’s briefcase weigh? ** The contents of his briefcase weigh 16 - 4 = <<16-4=12>>12 pounds. How much do Kevin’s work papers weigh? ** His work papers weigh 12 / 6 = <<12/6=2>>2 pounds. How much does Kevin’s laptop weigh? ** Thus, his laptop weighs 12 - 2 = <<12-2=10>>10 pounds. How many more pounds does Kevin’s laptop weigh than Karen’s tote? ** Therefore, Kevin’s laptop weighs 10 - 8 = <<10-8=2>>2 pounds more than Karen’s tote. #### 2 Tony paid $7 for 2 dozen apples and 1 bunch of bananas. Arnold paid $5 for 1 dozen apples and 1 bunch of bananas. How much does a bunch of bananas cost? How much did Tony pay? ** Tony paid $7-$5= $<<7-5=2>>2 more than Arnold How many apples did Tony buy? ** We know he bought the same number of bananas as Arnold but that he bought 2-1=1 dozen apples more than Arnold How much do a dozen apples cost? ** Therefore a dozen apples should cost $2 How much does a bunch of bananas cost? ** If Arnold paid $5 and $2 for a dozen apples then the bunch of bananas cost $5-$2=$<<5-2=3>>3 #### 3 If Stu has 9 books and Albert has 4 times as many books as Stu, how many books do Stu and Albert have in total? How many books does Albert have? ** Albert has 4 * 9 books belonging to Stu = <<4*9=36>>36 books. How many books do Stu and Albert have in total? ** So the pair have a combined total of 36 books belonging to Albert + 9 books belonging to Stu = <<36+9=45>>45 books. #### 45 In a race, there are eight runners. The first five runners finish the race in 8 hours, while the rest of the runners finish the race 2 hours later. Calculate the total time the eight runners took to finish the race. How many hours did the first five runners take to finish the race? ** The first five runners took a combined total of 5*8 = <<5*8=40>>40 hours to finish the race. How many runners finished the race 2 hours after the first five? ** The number of runners who finished the race 2 hours later after the first five is 8-5 = <<8-5=3>>3 How many hours did the 3 runners take to finish the race? ** The 3 runners who finished the race 2 hours later took a total of 8+2 =<<8+2=10>>10 hours to run the race. How many hours did the three runners take to finish the race? ** Together, the three runners who finished the race in 10 hours took a total of 10*3 = <<10*3=30>>30 hours. How many hours did the eight runners take to finish the race? ** All eight runners took 30+40 = 70 hours altogether to finish the race. #### 70 Keaton climbed a 30 feet ladder twenty times while working at the construction site. Reece, also working at the same site, climbed a ladder 4 feet shorter than Keaton's ladder 15 times. What's the total length of the ladders that both workers climbed in inches? How many feet did Keaton climb? ** If Keaton climbed his ladder twenty times, he covered a length of 30*20 = <<30*20=600>>600 feet. How many feet was Reece's ladder? ** Reece's ladder, 4 feet shorter than Keaton's ladder, was 30-4 = <<30-4=26>>26 feet long. How many feet did Reece climb? ** If Reece climbed the ladder 15 times, he covered a length of 15*26 = <<15*26=390>>390 feet. What's the total length of the ladders that both workers climbed in inches? ** Keaton and Reece's total length covered while climbing the ladders is 390+600 = <<390+600=990>>990 feet. What's the total length of the ladders that both workers climbed in inches? ** Since one foot is equal to 12 inches, the total length they climbed the ladders in inches is 12*990 = <<12*990=11880>>11880 inches. #### 11880