Question

A picture measuring 2.5" high by 6" wide is to be enlarged so that the width is now 18 inches. How tall will the picture be?

Answer 1

7.5" if the width is now 18 that means its value increased by 3 so multiply 2.5 by 3 and its = to 7.5

Answer 2

Since the width went from 6 to 18, we can conclude that it increased by a factor of 3, 18/6=3. We can now factor in 3 to 2.5 and we see that 3×2.5=7.5. The new height is 7.5".