Question

The length of a rectangle is represented by 3x + 4, and its width is represented by

2x + 6. The perimeter of the rectangle is 45 units. Find the value of x.

Answer 1

5

Explanation:

Length of rectangle = 3x + 4

Width of the rectangle = 2x + 6

Perimeter of rectangle = 2(l + b)

45 = 2(3x + 4 + 2x + 6)

45 = 2(5x + 10)

45 = 10x + 20

45 - 20 = 5x

25 = 5x

x = 25/5

x = 5