Kate bought 7 packs of red bouncy balls and 6 packs of yellow bouncy balls. Each pack contained 18 bouncy balls. How many more red bouncy balls than yellow bouncy balls did Kate buy?

Kate bought 7 packs × 18 balls/pack =

<<7*18=126>>126 red bouncy balls. She also bought 6 packs × 18 balls/pack = <<6*18=108>>108 yellow bouncy balls. Kate bought 126 balls - 108 balls= <<126-108=18>>18 more red bouncy balls than yellow bouncy balls. #### 18 Mr. Lu owns a computer store. For last month, half of their sales are laptops, one-third are netbooks, and the rest are desktop computers. If Mr. Lu's store was able to sell a total of 72 computers, how many of them are desktop computers? There were 72/2 = <<72/2=36>>36 laptops sold. There were 72/3 = <<72/3=24>>24 netbooks sold. So, there were a total of 36 + 24 = <<36+24=60>>60 laptops and netbooks sold. Thus, 72 - 60 = <<72-60=12>>12 desktop computers were sold last month. #### 12 Ann is baking cookies. She bakes three dozen oatmeal raisin cookies, two dozen sugar cookies, and four dozen chocolate chip cookies. Ann gives away two dozen oatmeal raisin cookies, 1.5 dozen sugar cookies, and 2.5 dozen chocolate chip cookies. How many total cookies does she keep? Ann had 3 dozen oatmeal cookies - 2 dozen = <<3-2=1>>1 dozen oatmeal cookies left. Ann had 2 dozen sugar cookies - 1.5 dozen = <<2-1.5=.5>>.5 dozen sugar cookies left. Ann had 4 dozen chocolate chip cookies - 2.5 dozen = 1.5 dozen chocolate chip cookies left. Ann has a total of 1 + .5 + 1.5 dozen cookies = <<1+.5+1.5=3>>3 dozen cookies. 3 dozen cookies is 3 *12 cookies = <<3*12=36>>36 cookies remaining. #### 36 Mckenna starts her day at 8:00 a.m. She works in her office up to 11:00 a.m. then joins her team of developers at the conference room to talk about projects up to 13:00, from which she works for another two hours and then heads home. How many hours does Mckenna stay at work? From 8:00 to 11:00, Mckenna spends 11:00-8:00 = 3 hours at work When she joins the developers in the conference room for the meeting, she spends an additional 13:00-11:00 = 2 hours at work. So far, she has spent 3+2 = <<3+2=5>>5 hours at work. When she works for an additional 2 hours before heading home, her total work hours become 5+2 = <<5+2=7>>7 hours #### 7 A fox can run at the maximum speed of 50 kilometers per hour. Considering the fox would run at a constant speed, what distance would he make during 120 minutes? 1 hour is 60 minutes, so 120 minutes is 120 / 60 = <<120/60=2>>2 hours. During one hour a fox can make 50 kilometers, so during two hours, he would be able to run 50 * 2 = <<50*2=100>>100 kilometers. #### 100 There are 12 crates that each contain 150 oranges. There are 16 boxes that each hold 30 nectarines. How many pieces of fruit are in the crates and the boxes in total? Oranges = 12 * 150 = <<12*150=1800>>1800 Nectarines = 16 * 30 = <<16*30=480>>480 1800 + 480 = <<1800+480=2280>>2280 There are 2280 pieces of fruit in total. #### 2280 The ratio of boys to girls in a family is 5:7. The total number of children in the family is 180. If the boys are given $3900 to share, how much money does each boy receive? The total ratio representing the number of children in the family is 5+7 = <<5+7=12>>12 From the total ratio of children in the family, 5/12 represent the number of boys, meaning that the number of boys in the family is 5/12*180 = <<5/12*180=75>>75 If the boys are given $3900 to share, each boy receives $3900/75 = $<<3900/75=52>>52 #### 52 Tony has a terrible toothache and decides to buy some painkillers from the store. He picks up a bottle of 50 pills and takes them home. He takes 2 pills each day three times a day for the first 2 days, before cutting this amount in half for the next 3 days. On the sixth day, he takes a final 2 pills in the morning and ends up feeling better. How many pills are left in the bottle? Tony starts with 50 pills and takes 2 pills each 3 times a day, meaning he takes 2*3=6 pills in total. Tony repeats this process for two days in total, meaning over those two days he takes 2*6= <<2*6=12>>12 pills Tony then cuts down his pill usage in half, meaning he's now taking 6/2= <<6/2=3>>3 pills a day. Since he repeats this process for three days, that means he takes 3*3= <<3*3=9>>9 pills for that period. Adding in the two pills Tony took on the final day, that means he took 12+9+2=<<12+9+2=23>>23 pills. Since there were 50 pills in the bottle to begin with, this means Tony has 50-23=<<50-23=27>>27 pills remaining. #### 27 An 18-month magazine subscription is normally $34. The magazine is currently running a promotion for $0.25 off each twice-a-month issue when signing up for the 18-month subscription. How many dollars cheaper is the promotional subscription than the normal one? The subscription sends twice monthly issues, so there are 2 * 18 = <<2*18=36>>36 issues. Thus, the promotional offer is 36 * 0.25 = $<<36*0.25=9>>9 cheaper than the normal subscription. #### 9 Caleb picked a handful of dandelion puffs. He gave 3 to his mom, another 3 to his sister, 5 to his grandmother, and 2 to his dog. Then, he divided the remaining dandelion puffs equally among his 3 friends. How many dandelion puffs did each friend receive if he originally picked 40 dandelion puffs? Caleb was left with 40 - 3 - 3 - 5 - 2 = <<40-3-3-5-2=27>>27 dandelion puffs to give to his friends. They each received 27/3 = <<27/3=9>>9 dandelion puffs #### 9