Question

A 5-metre wide lane was paved with bricks of size 20 cm x 15 cm. If the rate of bricks Rs 750 per 1000 and if the bricks worth Rs.49500 were used for pavement, find the length of the lane.

Answer 1

Area of 1 brick = 20 $\times$ 15 = 300 cm${}^2$

Bricks in Rs. 750 = 1000

Bricks in Rs. 49500 = 66000

Let length of lane (l) = x cm

Breadth = 5 m = 500 cm

$66000\times 300=500\times l$

$l=39600cm=396m$