The perimeter of a rectangular garden is 90 m. If the width is 7 m less than the length, find the length of the garden.
- 19 m
- 23 m
- 24 m
-
26 m
The correct answer is: D
Explanation
Let the length of the garden be x, then, the width = x - 7
perimeter of rectangle = 2(L + B) = 90 m
= 2(x + x - 7) = 90
= 2x - 7 = 45 ( after dividing through by 2)
= 2x = 45 + 7 = 52
x = \(\frac{52}{2}\) = 26 m
Thus, the length of the rectangular garden = 26 m.