BigBrain

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question:Leila went to the supermarket to get some groceries. Then she headed to her mechanic to get her automobile fixed. If fixing her automobile cost 350 which was 50 more than thrice the amount she spent at the supermarket, how much has she spent altogether?

answer:Reversing the steps to obtain the amount she spent at the supermarket, 50 less than 350 is 350-50 = <<350-50=300>>300 If 300 was thrice the amount she spent at the supermarket, then the amount spent at the supermarket was 300/3 = <<300/3=100>>100 In addition to what she spent fixing her auto, she spent 100+350 = <<100+350=450>>450 altogether 450

question:On a shopping trip in a crowded store, Josie had to wait 3 minutes for a cart, 13 minutes for an employee to unlock a cabinet to get her a product, 14 minutes for a stocker to restock a shelf with what she wanted, and 18 minutes in line to check out. Her shopping trip took an hour and a half. How many minutes did Josie spend shopping instead of waiting?

answer:There are 60 minutes in an hour, so the trip took 1 1/2 * 60 = 90 minutes. Josie spent 3 + 13 + 14 + 18 = <<3+13+14+18=48>>48 minutes waiting. Thus, she spent 90 - 48 = <<90-48=42>>42 minutes shopping. 42

question:10 years, Terry will be 4 times the age that Nora is currently. If Nora is currently 10 years old, how old is Terry now?

answer:Terry will be 4*10=<<4*10=40>>40 years old in 10 years Currently, Terry is 40-10 = <<40-10=30>>30 years old. 30

question:A frog lays 800 eggs a year. 10 percent dry up, and 70 percent are eaten. 1/4 of the remaining eggs end up hatching, how many frogs hatch out of the 800?

answer:Dried up:800(.10)=80 eggs 800(.70)=560 eggs Total left:800-80-560=<<800-80-560=160>>160 eggs 160/4=<<160/4=40>>40 eggs survive to hatch 40