Question

If rectangular length and width difference 5,perimeter 110 then find length and width

Answer 1

the length is 25 and width is 30

consider length =L

consider width =W

L-W =5.......(1)

2( L + W ) = 110

2L + 2W = 110......(2)

multiply eq(1)*2

2L - 2W =10........(3)

substraction from Eq(2) - (3)

L =25

put this value in eq (1) we get

W =30