Question

A dog that weighs 20 pounds on Earth weighs 7.6 pounds on Mars. A cat that weighs 15 pounds on Earth weighs x pounds on Mars.

If the unit rate remains the same, what is the value of x?

Answer 1

Since the dog weighs 20 pounds on Earth and 7.6 pounds on Mars, we need to subtract 7.6 from 20. So 20-7.6= 12.4. So there is a change of 12.4
Now we need to subtract 12.4 from 15 and we get 2.6
So the cat weighs 2.6 pounds on Mars.