Question

The length y of a rectangle is four less than three times the width x. The perimeter of the rectangle is 16 cm.

Answer 1

y = 1 cm

x = 7 cm

Explanation:

x = 3y + 4

perimeter = 2 * ( y + x ) = 16

x + y = 8 by using x = 3y + 4

y + 3y + 4 = 8

4y = 4

y = 1

1 + x = 8

x = 7

y = 1 cm

x = 7 cm