Mel is three years younger than Katherine. When Katherine is two dozen years old, how old will Mel be in years?

When Katherine is 2 dozen years old, she will be 2*12=

<<2*12=24>>24 years old. If Mel is three years younger than Katherine, then when Katherine is 24 years old, Mel will be 24-3=<<24-3=21>>21 years old. #### 21 James collects all the fruits from his 2 trees. Each tree has 20 plants. Each plant has 1 seed and he plants 60% of those. How many trees did he plant? He got 20*2=<<20*2=40>>40 seeds That means he plants 40*.6=<<40*.6=24>>24 trees #### 24 Kyle bought 2 glass bottles that can hold 15 origami stars each. He then bought another 3 identical glass bottles. How many stars must Kyle make to fill all the glass bottles he bought? Kyle has 2 + 3 = <<2+3=5>>5 glass bottles. He needs to make 15 x 5 = <<15*5=75>>75 origami stars #### 75 Mark has two pets, a hare that runs 10 feet/second and a turtle that crawls 1 foot/second. If they're going to run a 20 foot-race, how much of a head start (in seconds) does the turtle need to finish in a tie? We can find how long the hare spends running by dividing the distance of the race by the hare's speed: 20 feet / 10 feet/second = <<20/10=2>>2 seconds We can do the same for the turtle: 20 feet / 1 foot/second = <<20/1=20>>20 seconds Finally, subtract the hare's run time from the turtle's run time to find the length of the head start the turtle needs: 20 seconds - 2 seconds = <<20-2=18>>18 seconds #### 18 Movie tickets cost $5 each on a Monday, twice as much on a Wednesday, and five times as much as Monday on a Saturday. If Glenn goes to the movie theater on Wednesday and Saturday, how much does he spend? He spends 5*2=$<<5*2=10>>10 on Wednesday to pay for a movie ticket. He spends 5*5=$<<5*5=25>>25 on Saturday to pay for a movie ticket. He spends a total of 10+25=$<<10+25=35>>35. #### 35 Conner has a dune buggy that he rides in the desert. On flat sand, it can ride at a speed of 60 miles per hour. When traveling on downhill slopes, it can race at 12 miles per hour faster than it can when it is on flat sand. And when riding on an uphill inclined slow, it travels at a speed 18 miles per hour slower than when it is riding on flat sand. If Conner rides his dune buggy one-third of the time on flat sand, one-third of the time on uphill slopes, and one-third of the time on downhill slopes, what is his average speed in miles per hour? 12 mph faster than 60mph is 60+12=<<60+12=72>>72 mph. 18 mph slower than 60 mph is 60-18=<<60-18=42>>42 mph. If he spends 1/3 of the time at each of these three speeds, then he averages (60+72+42)/3 = <<(60+72+42)/3=58>>58 mph. #### 58 A store sells 20 packets of 100 grams of sugar every week. How many kilograms of sugar does it sell every week? A total of 20 x 100 = <<20*100=2000>>2000 grams are sold every week. Since 1 kilogram is equal to 1000 grams, then 2000/1000 = <<2000/1000=2>>2 kilograms of sugar are sold every week. #### 2 James decides to replace his car. He sold his $20,000 car for 80% of its value and then was able to haggle to buy a $30,000 sticker price car for 90% of its value. How much was he out of pocket? He sold his car for 20000*.8=$<<20000*.8=16000>>16,000 He bought the new car for 30,000*.9=$<<30000*.9=27000>>27,000 That means he was out of pocket 27,000-16,000=$<<27000-16000=11000>>11,000 #### 11000 Simon wanted to buy flowers that his mom could plant for Mother's Day. The garden center was offering 10% off all purchases. He bought 5 pansies at $2.50 each, one hydrangea that cost $12.50 and 5 petunias that cost $1.00 each. If he paid with a $50 bill, how much change would Simon receive back from his purchase? 5 pansies at $2.50 each is 5*2.50 = $<<5*2.5=12.50>>12.50 5 petunias at $1.00 each 5*1 = $<<5*1=5.00>>5.00 All total he spends 12.50+12.50+5.00 = $<<12.50+12.50+5.00=30.00>>30.00 The sale is 10% off so 30*.10 = $<<30*.10=3.00>>3.00 The purchase total now comes to 30-3 = $<<30-3=27.00>>27.00 He pays with a $50 bill so 50-27 = $<<50-27=23.00>>23.00 #### 23 Colton had 72 dolphin stickers. He gave 4 stickers each to 3 friends. He also gave his friend Mandy 2 more than he gave his three friends total. And he gave Justin 10 less than Mandy. How many stickers does Colton have left? Colton gave away 4 stickers * 3 friends = <<4*3=12>>12 stickers. Colton gave Mandy 2 + 12 stickers = <<2+12=14>>14 stickers. Colton gave Justin 14 stickers - 10 = <<14-10=4>>4 stickers. In total, Colton gave away 12 + 14 + 4 stickers = <<12+14+4=30>>30 stickers. Colton's number of total stickers at the end is 72 - 30 = <<72-30=42>>42 stickers. #### 42