[Question]: In January, Bill's labrador puppy weighs 40 pounds and his dachshund puppy weighs 12 pounds. Each dog gains 25% of their starting weight over the year. What's the difference in their weight at the end of the year?
[Answer]: First find how much weight the labrador puppy gains: 40 pounds * 25% = 10 pounds. Then add that weight gain to the puppy's starting weight: 40 pounds + 10 pounds = 50 pounds. Then find how much weight the dachshund puppy gains: 12 pounds * 25% = 3 pounds. Then add that weight gain to the puppy's starting weight: 12 pounds + 3 pounds = 15 pounds. Then subtract the dachshund puppy's weight from the labrador puppy's weight to find the difference: 50 pounds - 15 pounds = 35 pounds.
So the answer is 35.

[Question]: Julio goes fishing and can catch 7 fish every hour. By the 9th hour, how many fish does Julio have if he loses 15 fish in the process?
[Answer]: Julio catches a total of 7 fish / hour * 9 hours = 63 fish. After losing some of the fish, Julio has 63 fish - 15 fish = 48 fish.
So the answer is 48.

[Question]: Archie is playing with his marbles outside. He loses 60% of them into the street. Of the remaining ones, he loses half down a sewer. If he has 20 left, how many did he start with?
[Answer]:
He had 40 before losing them into the sewer because 20 x 2 = 40. He started with 100 because 40 / .4 = 100.
So the answer is 100.