Question

in one day 3 persons can build a 3.6 m long wall. how many persons are required to build a 54 m long wall in 1 day

Answer 1

use formula,
M × D/W = m × d /w

m , M are the no of persons initial and final
d , D are the no of days
w , W are the no of work

now,
3 × 1 /3.6 =m/54
( 3/3.6) ×54 = m
m = 45

hence, 45 persons required

Answer 2

Hi friend,

This is a direct variation question.

In direct variation we will do as-:

3 person=3.6 m

let the number of persons who could make a wall of 54m be x then.

x=54 m

Direct variation-:

3/3.6=x/54
54*3=x*3.6
54*3/3.6=x
45=x
x=45

Hence, 45 persons are needed to build 54 m wall in one day.

Hope it helped you......................