Question

The formula for the perimeter of a rectangle is P = 2l + 2w. Find w if P = 68 and l = 10.
A. W = 25
B. W = 15
C. W = 28
D. W = 24

Answer 1

Answer can be found by substitution.
P=68 and l=10
Put these into P=2l+2w
68=2(10)+2w
68=20+2w
2w+20=68
2w+20-20=68-20
2w=48
2w/2=48/2
w=48/2
=24

Answer 2

detailed explanation @CoCoTsoi good job ;D (Y) <---that's a thumbs up

Answer 3

Thanks, lgba! I will keep going :D