Question

The weight of 8 science books is 28 pounds. what is the weight of 11 science books?

Answer 1

Weight of 8 books = 28 lbs
weight of 1 book = 28/8 lbs

Then, weight of 11 books will be: 28/8 * 11 = 38.5

So, your final answer is 38.5 Pounds.

Answer 2

Weight of 11 books =38.5 pounds

Explanation:

Weight of 8 science book = 28 pounds

Weight of 11 science books = ?

If 8 science books -----------------------28 pounds

then 11 science books ---------------------?

Cross multiplying, we have

Weight of 11 books = (11 * 28)/8

= 308/8

= 38.5 pounds