Question

A student bought 84 pencils. If he sharpened 35 pencils, what is the ratio of the unsharpened pencils to the sharpened pencils?

Answer 1

49:35

Explanation:

Because if there were 84 pencils and 35 were sharpened, and it says ratio of un sharpened pencil to sharpened pencils, then, you would have to do 35-84 because the number that is left is the number of un sharpened pencils.

Answer 2

Number of pencils bough by the student = 84
Number of pencils sharpened by the student = 35
Then
The number of pencils that was not sharpened = (84 - 35)
= 49
So 35 pencils have been sharpened and 49 pencils have not been sharpened.
Then Number of pencils unsharpened:Number of pencils sharpened = 49:35
= 7:5
So the ratio of the number of unsharpened pencil to the number of sharpened pencil is 7:5