Question

Neelam plans to use a piece of wire to make five square photo frames of length L cm, (L+1) cm (L+2) cm, .... Find the length of wire required.

(1) 75 cm
(2) 60 cm
(3) 30 cm
(4) 45 cm​

Answer 1

Answer:

Lenght of wire required,

= 4L + 4(L+1) + 4(L+2) + 4(L+3) + 4(L+4)

= 20L + 40

From the options the answer must be divisible by 4.

Option b

$20L + 40 = 60$