Tracy has a charity book collection store from which she receives book donations from members of her town. Any person who wants to borrow a book is free to do so as long as they return the book after they've finished reading. She has already received 300 book donations. If ten people come and donate five books each in a week, and a total of 140 books are borrowed by other people to read, calculate the total number of books she has remaining in the store?

How many books did the ten people donate? ** The ten people donated 10*5 =

<<10*5=50>>50 books. How many books does Tracy have after the new donations? ** The total number of books in her store after the new donations is 300+50 = <<300+50=350>>350 books. How many books does Tracy have remaining in the store? ** When some of the books are borrowed, her total collection becomes 350-140 =<<350-140=210>>210 books. #### 210 Barbi lost 1.5 kilograms each month for a year. Luca lost 9 kilograms every year for 11 years. How many more kilograms did Luca lose than Barbi? How many kilograms did Barbi lose in the year? ** Barbi = 1.5 * 12 months = <<1.5*12=18>>18 kg How many kilograms did Luca lose? ** Luca = 9 * 11 = <<9*11=99>>99 kg How many more kilograms did Luca lose than Barbi? ** 99 - 18 = <<99-18=81>>81 kg How many more kilograms did Luca lose than Barbi? ** Luca lost 81 kg more than Barbi. #### 81 For the summer, the clothing store has a 50% discount for all items. On Wednesdays, there is an additional $10.00 off on all jeans after the summer discount is applied. Before the sales tax applies, the cost of a pair of jeans is $14.50. How much was the original cost for the jeans before all the discounts? How much was the original cost for the jeans before the Wednesday discount? ** Before the Wednesday discount, the cost of the jean is $14.50 + $10.00 = $<<14.5+10=24.50>>24.50. How much was the original cost for the jeans before the summer discount? ** Since the original price was reduced by 50%, the original cost for the jeans is $24.50 * 2 = $<<24.5*2=49.00>>49.00. #### 49 Tony has two fish. Every year, his parents buy him two more, but one of them dies. How many fish will he have in five years? How many more fish does Tony have each year? ** Each year Tony has one more fish than before because 2 - 1 = <<2-1=1>>1 How many more fish will Tony have in five years? ** In five years, he will have 5 more fish because 5 x 1 = <<5*1=5>>5 How many fish will Tony have in five years? ** In five years he will have 7 fish because 2 + 5 = <<2+5=7>>7 #### 7 A pea patch is twice as big as a radish patch. If one sixth of the pea patch is 5 square feet. How much is a whole radish patch in square feet? How big is a whole pea patch? ** A whole pea patch is 5*6 = <<5*6=30>>30 square feet. How big is a whole radish patch? ** A radish patch is 30/2 = <<30/2=15>>15 square feet. #### 15 Mimi picked up 2 dozen seashells on the beach. Kyle found twice as many shells as Mimi and put them in his pocket. Leigh grabbed one-third of the shells that Kyle found. How many seashells did Leigh have? How many seashells does Mimi have? ** Mimi has 2 x 12 = <<2*12=24>>24 sea shells. How many seashells does Kyle have? ** Kyle has 24 x 2 = <<24*2=48>>48 sea shells. How many seashells does Leigh have? ** Leigh has 48 / 3 = <<48/3=16>>16 sea shells. #### 16 Alvin is selling his marble set. He has 100 marbles. 20% are white, 30% are black, and the rest are different colors. He sells the white ones for a nickel each, the black ones for a dime each, and the colors for $0.20 each. How much does he earn? How many white marbles does Alvin have? ** He has 20 white marbles because 100 x .2 = <<100*.2=20>>20 How many black marbles does Alvin have? ** He has 30 black marbles because 100 x .3 = <<100*.3=30>>30 How many color marbles does Alvin have? ** He has 50 color marbles because 100 - 20 - 30 = <<100-20-30=50>>50 How much does Alvin earn from white marbles? ** He earns $1 from white marbles because 20 x .05 = <<20*.05=1>>1 How much does Alvin earn from black marbles? ** He earns $3 from the black marbles because 30 x .1 = <<30*.1=3>>3 How much does Alvin earn from colors? ** He earns $10 from the colors because 50 x .2 = <<50*.2=10>>10 How much does Alvin earn in total? ** He earns $14 in total because 1 + 3 + 10 = <<1+3+10=14>>14 #### 14 Susan is picking strawberries. She's trying to fill her basket, but out of every handful of 5 strawberries she can't help but eat one of them herself. If her basket holds 60 strawberries, how many berries will she actually pick before she fills it? How many strawberries are in each handful? ** Out of every 5 berries, she eats 1, so only 5 strawberries - 1 strawberry = <<5-1=4>>4 strawberries go into the basket for each handful. How many handfuls will it take to fill the basket? ** The basket holds 60 strawberries, so it will take 60 strawberries / 4 strawberries per handful = <<60/4=15>>15 handfuls to fill the basket. How many strawberries will Susan pick? ** So in total, Susan will pick 60 strawberries + 15 handfuls * 1 strawberry eaten per handful = <<60+15*1=75>>75 strawberries. #### 75 Caden has four jars of coins. One jar of pennies, one jar of nickels, one jar of dimes and one jar of quarters. He has twice as many quarters as he does dimes. He has five times as many nickels as he does dimes. He has three times as many pennies as he does nickels. If he has 120 pennies, how much money does he have? How much money does he have? ** Starting with 120 pennies he has $1.20 How much money does he have? ** If he has three times as many pennies as he does nickels, he has 120 pennies / 3 nickels per penny = 40 nickels. 40 nickels = 40 * $0.05 = $<<40*0.05=2>>2 How much money does he have? ** If he has five times as many nickels as dimes he has 40 nickels / 5 dimes per nickel = 8 dimes. 8 * $0.10 = $<<40/5*0.10=0.80>>0.80 How much money does he have? ** if he has twice as many quarters than he does dimes, he has 8 dimes * 2 quarters per dime = 16 quarters = 16 *$ 0.25 = $<<8*2*0.25=4.00>>4.00 How much money does he have? ** In all he has $1.20 + $2.00 + $0.80 + $4.00 = $<<1.20+2+0.8+4=8.00>>8.00 #### 8 A retail store wants to hire 50 new phone reps to assist with the increased call volume that they will experience over the holiday. Each phone rep will work 8 hours a day and will be paid $14.00 an hour. After 5 days, how much will the company pay all 50 new employees? How many hours will the 50 new employees work? ** There are 50 reps and they will work 8 hour days so that's 50*8 = <<50*8=400>>400 hours How many hours will the 50 new employees work? ** They will work 5 days a week so that's 5*400 = <<5*400=2000>>2,000 hours How much will the company pay all 50 new employees? ** Each worker will be paid $14.00 an hour and in 5 days they will have worked 2,000 hours so that's 14*2000 = $<<14*2000=28000>>28,000 #### 28000