Shara collects shells. She had 20 shells before she went on vacation. On vacation, she found 5 shells per day for 3 days. Then he found 6 shells on the fourth day. How many shells does she have now?

How many shells did Shara collect on vacation? ** Shara collected 5 x 3 =

<<5*3=15>>15 shells for 3 days. How many shells did Shara collect on vacation? ** So she collected 15 + 6 = <<15+6=21>>21 shells rom her vacation. How many shells does Shara have now? ** Thus, she now has a total of 20 + 21 = <<20+21=41>>41 shells. #### 41 Whitney’s mom gave her two $20 bills to spend at the school book fair. Whitney has decided to buy 2 posters, 3 notebooks, and 2 bookmarks. Each poster costs $5, each notebook costs $4, and each bookmark costs $2. How much money, in dollars, will Whitney have left over after the purchase? How much will the posters cost? ** Whitney is buying 2 posters for $5 each, so the posters will cost 2*$5= $<<2*5=10>>10 total cost for posters. How much will the notebooks cost? ** Whitney is buying 3 notebooks for $4 each, so the notebooks will cost 3*$4= $<<3*4=12>>12 total cost for notebooks. How much will the bookmarks cost? ** Whitney is buying 2 notebooks for $2, so the bookmarks 2*$2= $<<2*2=4>>4 total cost for bookmarks. How much will the purchase cost? ** Since Whitney is paying $10 for posters, $12 for notebooks, and $4 for bookmarks, her total purchase will cost $10+$12+$4= $<<10+12+4=26>>26 total purchase cost. How much will Whitney be paying? ** Whitney’s mom gave her 2 $20 bills, so she will be paying with 2*$20=$<<2*20=40>>40 total payment. How much will Whitney have left over after the purchase? ** Since Whitney is paying with $40 and her purchase cost will be $26, she will have $40-$26= $<<40-26=14>>14 left over after the purchase. #### 14 John jogs at a speed of 4 miles per hour when he runs alone, but runs at 6 miles per hour when he is being dragged by his 100-pound German Shepherd dog. If John and his dog go on a run together for 30 minutes, and then John runs for an additional 30 minutes by himself, how far will John have traveled? How far does John run with his dog? ** John runs at 6 miles per hour for 0.5 hours, for a distance of 6*0.5=<<6*0.5=3>>3 miles. How far does John run by himself? ** Then John runs at 4 miles per hour for 0.5 hours, for a distance of 4*0.5=<<4*0.5=2>>2 miles. How far does John run in total? ** In total, John runs 3+2=<<3+2=5>>5 miles. #### 5 Jack bought 3 books a month at $20 each. He sells them back at the end of the year for $500. How much money did he lose? How much did Jack buy each month? ** He bought 3*20=$<<3*20=60>>60 of books a month How much did Jack buy in a year? ** That means he bought 60*12=$<<60*12=720>>720 of books a year How much money did Jack lose? ** So he lost 720-500=$<<720-500=220>>220 #### 220 A clothing store sells 20 shirts and 10 pairs of jeans. A shirt costs $10 each and a pair of jeans costs twice as much. How much will the clothing store earn if all shirts and jeans are sold? How much do the shirts cost? ** Twenty shirts amount to $10 x 20 = $<<10*20=200>>200. How much do the jeans cost? ** The cost of each pair of jeans is $10 x 2 = $<<10*2=20>>20. How much do the jeans cost? ** So 10 pairs of jeans amount to $20 x 10 = $<<20*10=200>>200. How much will the clothing store earn if all shirts and jeans are sold? ** Therefore, the store will earn $200 + $200 = $<<200+200=400>>400 if all shirts and jeans are sold. #### 400 If a tarantula has eight legs, and one tarantula egg sac can contain 1000 tarantulas, how many baby tarantula legs would be in one less than 5 egg sacs? How many egg sacs are there? ** One less than 5 is 5-1=<<5-1=4>>4. How many tarantula babies are there? ** If one tarantula egg sac can contain 1000 tarantulas, then four egg sacs can hold 4*1000=4000 tarantula babies. How many baby tarantula legs are there? ** If each tarantula baby has eight legs, the 4 egg sacs can contain 4000*8=<<4000*8=32000>>32,000 baby tarantula legs. #### 32000 Henry, John and Leo collected some seashells from the beach. Henry collected 11, Paul 24. If they initially collected 59 seashells in total and Leo gave a quarter of his collection to a younger kid they met, how many do they have in total now? How many seashells did Henry and Paul collect? ** Henry and Paul collected a total of 11+24 = <<11+24=35>>35 seashells How many seashells did Leo collect? ** To make a total of 59, Leo must have collected 59-35 = <<59-35=24>>24 seashells How many seashells did Leo give out? ** He gave out a quarter of 24 seashells which is 24*(1/4) = <<24*(1/4)=6>>6 seashells How many seashells do they have in total now? ** They are now left with 59-6 = <<59-6=53>>53 seashells #### 53 Chang's Garden has two kinds of apples. Sweet ones and sour ones. He can sell the sweet ones for $.5 an apple. The sour ones sell for $.1 an apple. 75% of the apples he gets are sweet and the rest are sour. If he earns $40, how many apples did his trees give him? How many apples are sour? ** 25% of the apples are sour because 100 - 75 = <<100-75=25>>25 How much do the sweet apples sell for? ** The average price of an apple sold is $.4 because .75(.5) + .25(.1)= .4 How many apples did he get? ** He got 100 apples because 40 / .4 = <<40/.4=100>>100 #### 100 Marcos has to get across a 5 mile lake in his speedboat in 10 minutes so he can make it to work on time. How fast does he need to go in miles per hour to make it? How many minutes does it take to travel 5 miles? ** 10 minutes for 5 miles means 10 minutes / 5 miles = <<10/5=2>>2 minutes/mile How fast does Marcos need to go in miles per hour? ** 1 hour is 60 minutes so 60 minutes/hour / 2 minutes/mile = 30 miles/hour #### 30 At the Delicious Delhi restaurant, Hilary bought three samosas at $2 each and four orders of pakoras, at $3 each, and a mango lassi, for $2. She left a 25% tip. How much did the meal cost Hilary, with tax, in dollars? How much did the samosas cost? ** The samosas cost 3*2=<<3*2=6>>6 dollars each. How much did the pakoras cost? ** The pakoras cost 4*3=<<4*3=12>>12 dollars each. How much was the base cost of the food? ** The food came to 6+12+2=<<6+12+2=20>>20 dollars How much was the tip? ** The tip was an additional 20*.25=<<20*.25=5>>5 dollars How much did the meal cost Hilary, with tax, in dollars? ** The total is 20+5=<<20+5=25>>25. #### 25