Question: Melisa and Jennifer threw a fiftieth birthday party for their father at a local restaurant. When the bill came, Melisa added a 15% tip of $42. Jennifer said that the service was wonderful and they should leave a 20% tip instead. How much is a 20% tip?
Answer: Step-by-step reasoning process: If 15% is known to be $42, then 5% can be found by dividing $42 ÷ 3 = $14. So 20% is $14 + $42 = $56.
So the answer is 56.

Question: John buys 30 ducks for $10 each. They weigh 4 pounds and he sells them for $5 per pound. How much profit did he make?
Answer: Step-by-step reasoning process: He bought the ducks for 30 * 10 = $300. He sold each duck for 4 * 5 = $20. So he sold all the ducks for 30 * 20 = $600. So he made a profit of 600 - 300 = $300.
So the answer is 300.

Question: Tye goes to two different banks and withdraws $300 from each bank. If he got it all in 20 dollar bills how many bills did he get?
Answer: Step-by-step reasoning process: He got 300 * 2 = $600. So he got 600 / 20 = 30 bills.
So the answer is 30.

Question: Spike the bearded dragon eats crickets to get protein in his diet. He hunts 5 crickets every morning and three times that over the afternoon and evening, munching on leafy greens and other vegetation in between. How many crickets does Spike hunt per day?
Answer:
Step-by-step reasoning process: Spike hunts 3 * 5 = 15 crickets in the afternoon and evening. Hence, he hunts 5 + 15 = 20 crickets per day.
So the answer is 20.