John raises butterflies. He has 4 jars of 10 caterpillars each. 40% of them fail to become butterflies, but the rest become caterpillars. He sells the butterflies for $3 each. How much money does he make?

He has 4*10=

<<4*10=40>>40 caterpillars. 40*.4=<<40*.4=16>>16 fail to form. That means he has 40-16=<<40-16=24>>24 butterflies. So he makes 24*3=$<<24*3=72>>72. #### 72 Jake sold 10 more stuffed animals than Thor. Quincy sold ten times as many stuffed animals as Thor. If Quincy sold 200 stuffed animals, how many more stuffed animals did Quincy sell than Jake? Thor sold 200/10=<<200/10=20>>20 stuffed animals. Jake sold 20+10=<<20+10=30>>30 stuffed animals. Quincy sold 200-30= <<200-30=170>>170 more stuffed animals than Jake. #### 170 A fan can create an airflow of 10 liters per second. If the fan works for 10 minutes each day, calculate the amount of airflow it will create in one week. If the fan works for 10 minutes each day, in a week with 7 days, it will have worked for 10*7 = <<10*7=70>>70 minutes. Since a minute has 60 seconds, the total time in seconds that the fan will have worked in one week is 70*60 = <<70*60=4200>>4200 seconds. Since the fan can create an airflow of 10 liters per second, in 4200 seconds, it will create an airflow of 4200*10= <<4200*10=42000>>42000 liters. #### 42000 In a zoo, a hare is 14 inches tall, while a camel is 24 times taller than the hare. How tall is the camel in feet? The camel is 14 x 24 = <<14*24=336>>336 tall in inches. So, the camel is 336 / 12 = <<336/12=28>>28 feet tall. #### 28 Archie needs to lay sod in his backyard that measures 20 yards by 13 yards. He has a shed on it that measures 3 yards by 5 yards. How many square yards of sod will Archie need for his backyard? 20 * 13 = <<20*13=260>>260 square yards 3 * 5 = <<3*5=15>>15 square yards 260 - 15 = <<260-15=245>>245 square yards Archie needs 245 square yards of sod. #### 245 If Mr. Jones has 6 shirts for every pair of pants, and he has 40 pants, what's the total number of pieces of clothes he owns if all other factors remain the same? If Mr. Jones has 6 shirts for every pair of pants, and he has 40 pants, the total number of shirts he has is 6*40 =<<6*40=240>>240 The total number of pieces of clothes he owns is 240+40 = <<240+40=280>>280 #### 280 Johan has a ten-bedroom house with 8 walls in each room. He paints 3/5 of the rooms in the house green and paints the rest of the rooms with purple color. How many walls in the house did he paint purple? Since Cristian's house has ten rooms, he painted 3/5*10 = <<3/5*10=6>>6 rooms with green color. The number of rooms he painted with purple is 10-6 = <<10-6=4>>4 rooms. Since each room in the house has eight walls, the number of walls painted purple is 8*4= <<8*4=32>>32. #### 32 Lizzy's mother gave her 80 cents and her father gave her 40 cents for keeping to her promise. She went to her uncle's and spent 50 cents buying candy for her little cousin. Her uncle gave her another 70 cents. How many cents does she have now? She got 80+40 = <<80+40=120>>120 cents from her mother and father She spent 50 cents on candy leaving 120-50 = <<120-50=70>>70 cents Her uncle gave her an additional 70 cents for a total of 70+70 = <<70+70=140>>140 cents #### 140 Jenny is planning her catering budget for her wedding. She's going to have 80 guests. 3 times as many guests want steak as chicken. If each steak entree costs $25 and each chicken entree costs $18, how much is the total catering budget? Let s be the number of guests who want steak and c be the number who want chicken. We know that s + c = 80 and s = 3c. Substituting the second equation into the first equation, we get 3c + c = 80 Combining like terms, we get 4c = 80 Dividing both sides by 4, we get c = 20 Then multiply the number of guests who want chicken by the cost of each chicken entree: 20 guests * $18/guest = $<<20*18=360>>360 Then triple the number of guests who want chicken to find the number who want steak: 20 guests * 3 = <<20*3=60>>60 guests Then multiply the number of guests who want steak by the cost of each steak entree: 60 guests * $25/guest = $<<60*25=1500>>1500 Then add the cost of the steak and chicken entrees to find the total cost: $1500 + $360 = $<<1500+360=1860>>1860 #### 1860 Carter can read half as many pages as Lucy in 1 hour. Lucy can read 20 more pages than Oliver in 1 hour. Oliver can read 40 pages. How many pages can Carter read in 1 hour? Lucy can read 20 more pages than Oliver who can read 40 pages so Lucy can read 40+20 = <<20+40=60>>60 pages Carter can read half as many pages as Lucy who can read 60 pages so he can read 60/2 = <<30=30>>30 pages in 1 hour #### 30