Question

A truck is carrying pear juice, pineapple juice, and grapefruit juice bottles in a ratio of

9:1:2. If there are 20 grapefruit juice bottles, then how many juice bottles in total are
there?

Answer 1

120

Explanation:

We let N be such that

9N = number pear juice bottles,

1N = number of pineapple juice bottles,

2N = number of grapefruit juice bottles.

Then, 20 = 2N, so that N = 10, and

The total number of juice bottles =

9N+1N+2N =

9(10)+1(10)+2(10)=

90+10+20=120