Question

Rich drew a 7 in wide by 4 in tall picture that will be turned into a 40 ft wide billboard. How tall will the billboard be?

Answer 1

Rich drew a 7 in wide by 4 in tall picture that will be turned into a 40 ft wide billboard. How tall will the billboard be?

Answer 2

Set it up as a proportion. 7:40 :: 4:x (seven is to forty as 4 is to x)
The product of the means is equal to the product of the extremes
7x =40(4)
7x = 160
x = 160/7