Question: Cassie is trimming her pet's nails. She has four dogs and eight parrots. Each dog has four nails on each foot, and each parrot has three claws on each leg, except for one parrot who has an extra toe. How many nails does Cassie need to cut?
Answer: First, find the number of dog nails by multiplying the number of dogs by the number of nails on each leg and the number of legs on each dog: 4 dogs * 4 legs per dog * 4 nails per leg = 64 nails. Then do the same for parrots, ignoring the one parrot's extra toe for now: 8 parrots * 2 legs per parrot * 3 nails per leg = 48 nails. Now add one to the previous number because one parrot has an extra toe: 48 + 1 = 49 nails. Now add the number of nails from the parrots and the dog: 49 nails + 64 nails = 113 nails. The answer is 113.
[Question]Ember is half as old as Nate who is 14. When she is 14 herself, how old will Nate be?
[Answer]Ember is 14 / 2 = 7 years old. When she is 14, Nate will be 14 + 7 = 21 years old. The answer is 21.
Q: After negotiating for the price of a phone, Karsyn bought a phone at 20% of the initial price. If the phone's initial price was $600, calculate how much she paid after negotiating.
A: If the initial price was $600, after negotiating the price, Karsyn paid 20 / 100 * $600 = $120 less. The price at which she bought the phone is $600 - $120 = $480. The answer is 480.
Question: Ben spends 20% of his after-tax income on his car. If his car payment is $400 and he pays 1/3 of his gross income in taxes, how much does he make per month before taxes?
Answer: First divide that amount of the car payment by 20% to find Ben's after - tax salary: $400 / .2 = $2000. Then find the proportion of his salary Ben keeps after taxes by subtracting the tax rate from 1: 1 - 1 / 3 = 2 / 3. Then divide Ben's after - tax salary by the proportion of his salary he keeps to find his before - tax salary: $2000 / 2 / 3 = $3000. The answer is 3000.
[Question]If I'm 4 times older than Billy currently, and Billy is 4 years old, how old was I when Billy was born?
[Answer]I would currently be 4 * 4 = 16 years old, since I'm 4 times older than Billy's age of 4. Therefore, in order to find my age at Billy's birth we'd simply subtract Billy's age of 4 from my age, meaning I was 16 - 4 = 12 years old. The answer is 12.
[Question]Bo is learning words for the GRE. He got 800 flashcards. He knew 20% of the words on them. He has 40 days to learn the rest. How many words does he need to learn a day?
[Answer]
He knows 800 * .2 = 160 words. So he needs to learn 800 - 160 = 640 words. That means he needs to learn 640 / 40 = 16 words per day. The answer is 16.