Hannah hangs a 2 foot by 4 foot painting on a 5 foot by 10 foot wall. What percentage of the wall is taken up by the painting? Give the rationale and then the answer.
Let's think step by step. First find the area of the painting: 2 feet * 4 feet = 8 square feet. Then find the area of the wall: 5 feet * 10 feet = 50 square feet. Then divide the area of the painting by the area of the wall and multiply by 100% to express the answer as a percentage: 8 square feet / 50 square feet * 100% = 16%.. The answer is: 16.

A small pizza can gives 4 slices, and a large pizza gives 8 slices. George purchased 3 small and 2 large pizzas. George would like to eat 3 pieces. His friend Bob would like to eat one more piece than George. Susie will eat half as many as Bob. Bill, Fred and Mark would each like 3 pieces. How many slices of pizza will be left over? Give the rationale and then the answer.
Let's think step by step. George has 3 small pizzas * 4 slices = 12 pieces. George also has 2 large pizzas * 8 slices = 16 slices. Total, George has 12 + 16 slices = 28 slices of pizza. Bob will eat 3 slices + 1 = 4 slices. Susie will eat 1 / 2 * 4 slices = 2 slices. Bob, Fred and Mark will eat in total 3 + 3 + 3 = 9 pieces. Total slices of pizza eaten will be 3 + 4 + 2 + 9 = 18 pieces. Total pizza slices remaining will be 28 pieces - 18 = 10 slices left.. The answer is: 10.

The cafe has 16 chefs and 16 waiters. If 6 chefs and 3 waiters drop out, how many chefs and waiters are left? Give the rationale and then the answer.
Let's think step by step. There are 16 chefs - 6 chefs = 10 chefs left. There are 16 waiters - 3 waiters = 13 waiters left. In total there are 10 chefs + 13 waiters = 23 chefs and waiters left.. The answer is: 23.