[Question]: If it takes 8 days for 3 builders to build a cottage. How long will it take 6 builders to build the same size cottage working at the same rate?
[Answer]: It would take one builder 8 x 3 = 24 days to build the cottage on his own. 6 builders can build the house in 24 / 6 = 4 days.
So the answer is 4.

[Question]: Tim drinks 2 bottles that are each 1.5 quarts and an additional 20 ounces a day. How much water does he drink a week?
[Answer]: The bottles are 1.5 * 32 = 48 ounces. So he drinks 48 * 2 = 96 ounces from the bottles. So in total he drank 96 + 20 = 116 ounces a day. 116 * 7 = 812 ounces a week.
So the answer is 812.

[Question]: A frog lays her eggs over a series of 4 days. The first day she lays 50 eggs. The second day, she doubles her production of eggs. The third day she lays 20 more than the second day, and the last day she doubles the first three days total. How many eggs did the frog lay over the span of the 4 days?
[Answer]:
Day 1:50. Day 2:50(2) = 100. Day 3:100 + 20 = 120. Day 4:2(50 + 100 + 120) = 540. Total:50 + 100 + 120 + 540 = 810 eggs.
So the answer is 810.