Question

In a fish tank, 1/5 of the fish are guppies and 1/12 of the fish are goldfish. Which equation most closely estimates the fraction of fish that are guppies or goldfish in the fish tank?

Answer 1

`(1)/(4) + 0 = (1)/(4)`

Explanation:

`(1)/(5) + (1)/(12) = (12)/(60) + (5)/(60) = (17)/(60)`

1/5 is close to 1/4, 1/12 is close to 0, so

1/5 + 1/12 = 17/60, which is close to 1/4.