Question

Donavan is creating a geometric design using similar rectangles. One of his rectangles is 2 inches wide and 6 inches long. He wants to have another rectangle that is 5 inches wide. To follow his design, how long must the second rectangle be?

A. 2 inches


B. 6 inches


C. 12 inches


D. 15 inches

Answer 1

Let the unknown length be x


`(2)/(5) = (6)/(x)`

`(2x3)/(5x3) = (6)/(x)`

`x = 15`

Answer : D