Math Problem of the Week - Upper Elementary - Feb. 6, 2022 to Feb. 12, 2022

Upper Elementary: 

Question: A frog eats half of the flies around a pond. A toad eats a third of the remaining flies. What fractional part of the flies are left at the pond?

Answer:  ¹/₃ of the flies

Solution:  After the frog eats half of the flies, the other half of the flies are left. The toad therefore eats a third of a half of the flies, and a third of a half is a sixth. Since ¹/₂ + ¹/₆ = ²/₃, that means ¹/₃ of the flies are left at the pond.