Question

A dog weighs 20% more than it did three months ago. It weighs 36 pounds now.

How much did the dog weigh three months ago?

Answer 1

• 30 pounds

Explanation:

Let the weight 3 month ago be x.

20% more than x is:

• 1.2x

We now have the following equation:

• 1.2x = 36
• x = 36/1.2
• x = 30 pounds