Question

How to solve the question step by step

Answer 1

Length = L

New length = L+0.1L= 1.1 L

Width = W

New width = W - (W/100)p= W-pW/100= (100W-pW)/100=W(100-p)/100

Area =A = LW

New area = A - 0.12A = 0.88A

New area = new width*new length = 1.1L*W(100-p)/100 = 1.1A(100-p)/100

New area = 0.88A

New area = 1.1A(100-p)/100

1.1A(100-p)/100 = 0.88A

1.1(100-p)/100 = 0.88

1.1(100 - p) = 88

100 - p = 80

p = 20

Answer C) 20.