Time & work

Question

A mason can complete a brick wall of size 10 ft. high, 15ft. wide, using 9 inches bricks in 3 days. how long will be take to make 4 walls of size 10 ft.high, 5 ft.wide using 9 inches bricks ?

A) 3 Days       B) 4 Days      C) 5 Days      D) 6 Days

Comments

My answer is 4 days

is it right?

please explain

Answer 1

yes! the answer is correct.

the mason needs 3 days to complete a wall of 10 x 15 = 150 sq fts that is 50 sq fts/day.

Now 4 walls x 10 x 5 = 200 sq fts .  so 200 sq fts / 50 = 4 days needed

since the bricks are of the same dimension in both cases, they can not affect the result in any way.

Comments

yeah, my approach is also same