Question

A summer camp is organizing a hike and needs to buy granola bars for the

Answer 1

Answer:

The number of small boxes is 9 and the number of large boxes is 3

Step-by-step explanation:

Let x be the number of large boxes.

The camp bought 3 times as many small boxes as large boxes, then the number of small boxes is 3x.

Each small box has 6 granola bars, then there are $6\cdot 3x=18x$ granola bars in 3x small boxes.

Each large box has 12 granola bars, then there are $12x$ granola bars in x large boxes.

All boxes had 90 granola bars, so

$18x+12x=90\\ \\30x=90\\ \\x=3\\ \\3x=9$