Question

a garden is shaped like a rectangle whose perimeter is 308 ft. the length is 10 times as long as the width. find the length and width

Answer 1

P=l + l + w + w

l=10*w

P=10w+10w+w+w

308=22w
w=308/22

Answer 2

perimeter = 2*L + 2*w = 308
L =10 * w
Multiplying by -2
-2L = -20*w
-2L +20*w = 0
Adding above equation to
2*L + 2*w = 308
22w =308
width = 14
Length = 140