Question

PLS HELP The width of Ben's rectangular family

room is 3 feet less than the length.
The perimeter is 70 feet. What is the
length of the family room?

Answer 1

19 feet

Explanation:

The perimeter is calculated by multiplying the sum of length and width by 2

width is 3 less than length so if we call the width x the length would be x + 3

2×(x + x + 3) = 4x + 6 and

4x + 6 = 70 subtract 6 from both sides

4x = 64 divide both sides by 4

x = 16

The length is x + 3 so the answer is 19 feet