Question

If the length of a rectangle is increased by 20% and the width is decreased by 20%, then the area

Answer 1

new length is l+20% x l
new breadth is b-20% x b

can u proceed now

Answer 2

This is what I would do.
EXAMPLE
initial length = 10
initial width = 100
initial area = 1000

new length = 12
new width = 120
new area = 1440

440/1000 = .44, so the area increases by 44%

Answer 3

A = (1.2L)(0.8W) = 0.96LW
so the area is decreased by 4%

Answer 4

@tangytaylor, the width is decreased

Answer 5

i agree

Answer 6

@xxferrocixx you are correct. sorry about that. also, i enjoy your explanation much better than mine.