Question

Chen is baking muffins and banana bread for a brunch buffet. He needs 3 and one-fifth cups of flour to make the muffins and 3 and two-thirds cups of flour to make the banana bread. Which is the best estimate of the number of cups of flour that Chen needs to bake both recipes?
6 cups of flour
7 cups of flour
8 cups of flour
9 cups of flour

Answer 1

3 1/5 = 3.2 and 3 2/3 ≈ 3.67.
3.2 + 3.67 ≈ 6.87, which rounds to 7.

Answer: 7 cups of flour.