On Friday, Hank opened his used-bicycle store with a stock of bicycles, all fixed-up and ready to ride. Over the course of the day, he sold 10 bicycles and bought an additional 15 to fix up. On Saturday, he sold 12 bicycles and bought 8 more. And on Sunday, he sold 9 bicycles and bought 11 more. What was the net increase in the number of bicycles in stock in Hank's store over the three days?

How many bicycles did Hank sell? ** He sold 10+12+9=

<<10+12+9=31>>31 bicycles. How many bicycles did Hank buy? ** He bought 15+8+11=<<15+8+11=34>>34 bicycles. What was the net increase in the number of bicycles? ** He now has 34-31=<<34-31=3>>3 more than at Friday's opening. #### 3 Alicia has to buy some books for the new school year. She buys 2 math books, 3 art books, and 6 science books, for a total of $30. If both the math and science books cost $3 each, what was the cost of each art book? How much did the maths books cost? ** The total cost of maths books is 2*3 = <<2*3=6>>6 dollars How much did the science books cost? ** The total cost of science books is 6*3 = <<6*3=18>>18 dollars How much did the maths and science books cost? ** The total cost for maths and science books is 6+18 = <<6+18=24>>24 dollars How much did the art books cost? ** The cost for art books is 30-24 = <<30-24=6>>6 dollars. How much did each art book cost? ** Since he bought 3 art books, the cost for each art book will be 6/3 = 2 dollars #### 2 Half of Jerome's money was $43. He gave $8 to Meg and thrice as much to Bianca. How much does Jerome have left? How much money does Jerome have? ** Jerome has $43 x 2 = $<<43*2=86>>86. How much money does Jerome have left? ** After giving Meg $8, he had only $86 - $8 = $<<86-8=78>>78 left. How much money did Jerome give to Bianca? ** Then he gave Bianca $8 x 3 = $<<8*3=24>>24. How much money does Jerome have left? ** So, Jerome has only $78 - $24 = $<<78-24=54>>54 left. #### 54 At the pet shop, there were 3 birds, 5 dogs, 4 snakes, and 1 spider for sale. How many legs were there in total? How many legs do the birds have? ** The 3 birds have 2 legs each, for a total of 3 * 2 = <<3*2=6>>6 paws. How many legs do the dogs have? ** The 5 dogs have 4 legs each, for a total of 5 * 4 = <<5*4=20>>20 paws. How many legs does the snake and spider have? ** The 1 snake has no paws, and a spider has 8 legs. How many legs are there in total? ** The total number of paws is 6+20+8=<<6+20+8=34>>34. #### 34 Saheed made four times as much money as Kayla. Kayla made $30 less than Vika. Vika made $84. How many dollars did Saheed make? How many dollars did Kayla make? ** Kayla made $30 less than Vika = $84 - 30 = 54. How many dollars did Saheed make? ** Saheed made 4*Kayla = 4*54 = 216 #### 216 Stacy went to a store to buy some pairs of shorts. Each pair normally cost $10, but there's a discount of 10% on the total cost for people who purchase 3 or more pairs at once. How much can she save by buying 3 pairs at once as opposed to purchasing them individually at different times? How much do 3 pairs cost without the discount? ** Without the discount, each pair cost $10 so 3 pairs cost 3*$10 = $<<10*3=30>>30 How much does she pay with the discount? ** With a discount of 10% on the total cost, she can pay only $30-($30*(10/100)) = $<<30-(30*(10/100))=27>>27 How much can she save by buying 3 pairs at once as opposed to purchasing them individually at different times? ** By buying 3 at once in order to get the discount, she can save $30-$27 = $3 #### 3 In the city park, there are various attractions for kids and their parents. The entrance ticket to the park is $5, but for each attraction, you have to pay separately - such ticket costs $2 for kids and $4 for parents. How much would a family with 4 children, their parents, and her grandmother pay for visiting the park, and one attraction inside? How many people are in the family? ** The whole family consists of 4 + 2 + 1 = <<4+2+1=7>>7 persons. How much does the entrance ticket cost? ** The entrance ticket to the park costs the same for every person, so the family would need to pay 7 * 5 = $<<7*5=35>>35 to enter. How much would the kids' tickets cost? ** For visiting the attraction the tickets would cost 4 * 2 = $<<4*2=8>>8 for the kids. How much would the parents' and grandmother's tickets cost? ** Their parents and grandmother would need to pay 3 * 4 = $<<3*4=12>>12. How much would the family's total cost be? ** That means a total cost for the family standing at 35 + 8 + 12 = $<<35+8+12=55>>55. #### 55 Eighty-five cans were collected. LaDonna picked up 25 cans. Prikya picked up twice as many times as many cans as LaDonna. Yoki picked up the rest of the cans. How many cans did Yoki pick up? How many cans did LaDonna pick up? ** LaDonna = <<25=25>>25 cans How many cans did Prikya pick up? ** Prikya is twice as many as LaDonna = 2*25 = <<2*25=50>>50 How many cans did Yoki pick up? ** Yoki picked up the rest 85 - 25 - 50 = <<85-25-50=10>>10 How many cans did Yoki pick up? ** Yoki picked up 10 cans. #### 10 Diego can carry 20 pounds of fruit home in his bookbag. If he buys a pound of watermelon, a pound of grapes, and a pound of oranges, how many pounds of apples can he buy? How many pounds of fruit can Diego carry? ** He is able to carry 3 pounds of watermelon, grapes, and oranges because1+1+ 1 = <<3=3>>3 How many pounds of apples can he buy? ** He can buy 17 pounds of apple because20-3 = <<20-3=17>>17 #### 17 Randy has $200 in his piggy bank. He spends 2 dollars every time he goes to the store. He makes 4 trips to the store every month. How much money, in dollars, will be in his piggy bank after a year? How much money does Randy spend every month? ** Randy spends 2*4=<<2*4=8>>8 dollars every month. How much money does Randy spend in a year? ** Randy spends 8*12=<<8*12=96>>96 dollars in a year. How much money, in dollars, will be in his piggy bank after a year? ** Randy will have 200-96=<<200-96=104>>104 dollars in his piggy bank after a year. #### 104