Question

if 30 men working 7 hours a day can build a wall is 18 days, how many men working 6 hours a day can build the wall in 30 days.

Answer 1

hey there...

here is ur answer....


<> first the formula for solving this kind of problems is

$\frac{mdh}{w}$

where M is men.
D is days.
H is hours.
W is work
the total formula is

$\frac{m1d1h1}{w} = \frac{m2d2h2}{w}$

this is the formula as work is same it will be constant on both the sides .so let the work be 1 .

so it will be

$30 \times 7 \times 18 = 30 \times 6 \times x$

X is the number of days.

$3780 = 180x$

$x = \frac{3780}{180}$

$x = 21$

so the number of days will be 21

hope this helps!

Answer 2

Answer:

answer hai 21men answer