Marlon had 30 female baby bunnies in his hutch. They matured after four months, and he gave 2/5 of them to his friend Rodney. If after another three months the bunnies conceived and gave birth to 2 kittens each, calculate the total number of bunnies Marlon has in his hutch now.

When he gave Rodney 2/5 of the bunnies, he gave away 2/5*30 =

<<2/5*30=12>>12 bunnies. He remained with 30-12 = <<30-12=18>>18 bunnies. When the bunnies gave birth to two kittens each, the total number of kittens born is 18*2 = <<18*2=36>>36. In total, Marlon now has 36+18 = <<36+18=54>>54 bunnies #### 54 Flies are Betty's frog's favorite food. Every day the frog eats 2 flies. Betty puts the flies she finds in a bottle. In the morning Betty catches 5 flies inside a bottle, and in the afternoon she catches 6 more, but when she removes the lid, one escapes. Betty wants to gather the whole week's food for her frog. How many more flies does she need? The frog eats 2 flies/day * 7 days/week = <<2*7=14>>14 flies a week. Betty catches flies in the morning and in the afternoon, for a total of 5 flies + 6 flies = <<5+6=11>>11 flies. But 1 fly escapes, leaving 11 flies - 1 fly = <<11-1=10>>10 flies. To get her frog's food for the whole week, Betty needs 14 flies - 10 flies = <<14-10=4>>4 more flies. #### 4 John buys a chair. He then buys a table that is 3 times the price of the chair. Then, he buys a couch that is 5 times the price of the table. If John paid $380 for all these items, what is the price of the couch? Let x be the price of the chair. The table costs 3*x. The couch costs 3*x*5=15*x. x+3*x+15*x=380 19*x=380 x=<<20=20>>20 The couch costs 20*15=<<20*15=300>>300 dollars. #### 300 Jean has 60 stuffies. She keeps 1/3 of them and then gives away the rest. She gives 1/4 of what she gave away to her sister Janet. How many stuffies did Janet get? Jean kept 60/3=<<60/3=20>>20 stuffies That means she gave away 60-20=<<60-20=40>>40 stuffies So Janet got 40/4=<<40/4=10>>10 stuffies #### 10 James wants to learn to become a chess grandmaster. It takes 2 hours to learn the rules. It then takes him 49 times that long to get a level of proficiency to start playing in local tournaments. After that, he devotes his life to chess and spends 100 times as much as the combined time to get proficient to becoming a master. How much total time did he spend? It takes him 2*49=<<2*49=98>>98 hours to go from knowing how to play to proficient So he spends 98+2=<<98+2=100>>100 hours combined on those So it takes him 100*100=<<100*100=10000>>10,000 hours to become a master from proficient So the total time was 100+10000=<<100+10000=10100>>10,100 hours #### 10,100 Hanna has twice as many erasers as Rachel. Rachel has three less than one-half as many erasers as Tanya has red erasers. If Tanya has 20 erasers, and half of them are red, how many erasers does Hanna have? Half of Tanya's 20 erasers are red, so she has 20/2=<<20/2=10>>10 red erasers. One-half as many erasers as Tanya has red erasers is 10/2=<<10/2=5>>5 red erasers. Rachel's three less than one-half as many erasers as Tanya's red erasers, which is 5-3=2 erasers. Hanna has twice as many erasers as Rachel, for a total of 2*2=<<2*2=4>>4 erasers. #### 4 Abigail built 10 fences. Each fence took her 30 minutes to build. If she builds fences for the next 8 hours, how many fences would she have built in total? 8*60 = <<8*60=480>>480 minutes are in the next 8 hours. Abigail builds 480/30 = <<480/30=16>>16 fences. Abigail will have built 10+16 = <<10+16=26>>26 fences in total. #### 26 Cindy can jump rope for 12 minutes before tripping up on the ropes. Betsy can jump rope half as long as Cindy before tripping up, while Tina can jump three times as long as Betsy. How many more minutes can Tina jump rope than Cindy? Betsy jumps half as long as Cindy, who jumps for 12 minutes so Betsy jumps 12/2 = <<12/2=6>>6 minutes Tina jumps three times as long as Betsy, who jumps for 6 minutes so Tina jumps 3*6 = <<3*6=18>>18 minutes Tina can jump for 18 minutes and Cindy and jump for 12 minutes so Tina can jump 18-12 = <<18-12=6>>6 minutes longer #### 6 James buys 3 shirts for $60. There is a 40% off sale. How much did he pay per shirt after the discount? He got a 60*.4=$<<60*.4=24>>24 discount So he paid 60-24=$<<60-24=36>>36 for the shirts That means he paid 36/3=$<<36/3=12>>12 per shirt #### 12 Barbeck has two times as many guitars as Steve, but Davey has three times as many guitars as Barbeck. If there are 27 guitars altogether, how many guitars does Davey have? Let x = the number of guitars Steve has. Barbeck has 2x guitars, and Davey has 3 * 2x = 6x guitars. 2x + 6x + x = 27 9x = 27 x = 27 / 9 = <<27/9=3>>3 so Steve has 3 guitars. Barbeck has 2 * 3 = <<2*3=6>>6 guitars. And Davey has 3 * 6 = <<3*6=18>>18 guitars. #### 18