Brianna started out with a bag of 24 marbles. She lost four marbles through a hole in the bag. Then, she gave away twice as many marbles as she had lost through the hole in the bag. Finally, her dog ate half as many marbles as Brianna had lost through the hole in the bag. How many marbles did Brianna have remaining?

Brianna gave away twice as many marbles as she had lost, or a total of 2*4=

<<2*4=8>>8 marbles. Her dog ate half as many marbles as Brianna had lost through the hole in the bag, or 4/2=<<4/2=2>>2 marbles. If she started with 24 marbles, then the number of marbles remaining is 24-4-8-2=<<24-4-8-2=10>>10 marbles. #### 10 Claire is scheduling her day. She has four hours to clean and two hours to cook, then divides the rest of her working day equally between crafting and tailoring. She then sleeps eight hours. If all of this takes place within one day, how many hours did Claire spend crafting? We know Claire has spent a total of 24 hours in a day - 4 hours cleaning - 2 hours cooking - 8 hours sleeping = 10 hours crafting and tailoring. Since she split her time equally, she must have spent 10 hours * 0.5 = <<10*0.5=5>>5 hours crafting. #### 5 Martha has 18 crayons. She lost half of them, so she bought a new set of 20 crayons. How many crayons in total does Martha have after the purchase? In the beginning, Martha lost 18 / 2 = <<18/2=9>>9 crayons. So after she bought a set of new crayons, she has in total 9 + 20 = <<9+20=29>>29 crayons. #### 29 Bailey bought 8 dog treats and an additional 2 chew toys. She also got 10 more rawhide bones. Sadly, she forgot her money and had to split the charges equally across 4 credit cards. How many items were included in each charge? Bailey got 8+2=<<8+2=10>>10 dog supplies. After adding the rawhide bones, she had 10+10=<<10+10=20>>20 dog supplies. She needed to split the charges across 4 cards, so each charge had 20*.25 = <<20*.25=5>>5 items. #### 5 Carter has a jar with 20 green M&Ms and 20 red M&Ms. He eats 12 of the green M&Ms, then his sister comes and eats half the red M&Ms and adds 14 yellow M&Ms. If Carter picks an M&M at random now, what is the percentage chance he'll get a green M&M? First find the final number of green M&Ms by subtracting 12 from the starting number: 20 M&Ms - 12 M&Ms = <<20-12=8>>8 green M&Ms Then find the final number of red M&Ms by dividing the starting number by half: 20 M&Ms / 2 = <<20/2=10>>10 red M&Ms Then find the total number of M&Ms at the end by adding the number of red, green and yellow M&Ms: 8 M&Ms + 10 M&Ms + 14 M&Ms = <<8+10+14=32>>32 M&Ms Then divide the number of green M&Ms by the total number of M&Ms and multiply by 100 to find the percentage chance Carter gets a green M&M: 8 M&Ms / 32 M&Ms * 100 = <<8/32*100=25>>25% #### 25 James is running a fundraiser selling candy bars. Each box has 10 candy bars in it. He sells 5 boxes. He sells each candy bar for $1.50 and buys each bar for $1. How much profit does he make from these sales? He makes 1.5-1=$<<1.5-1=.5>>.5 from each candy bar He sells 5*10=<<5*10=50>>50 candy bars So he makes 50*.5=$<<50*.5=25>>25 #### 25 Emily is 20 years old and her older sister, Rachel, is 24 years old. How old is Rachel when Emily is half her age? The difference in age between the two sisters is 24 - 20 = <<24-20=4>>4 years. When Rachel is twice Emily’s age, she is 4 x 2 = <<2*4=8>>8 years old. #### 8 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? The ten people donated 10*5 = <<10*5=50>>50 books. The total number of books in her store after the new donations is 300+50 = <<300+50=350>>350 books. 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? Barbi = 1.5 * 12 months = <<1.5*12=18>>18 kg Luca = 9 * 11 = <<9*11=99>>99 kg 99 - 18 = <<99-18=81>>81 kg 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? Before the Wednesday discount, the cost of the jean is $14.50 + $10.00 = $<<14.5+10=24.50>>24.50. 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