Question

7 workers working 6 hours a day can build a wall in 12 days. How many days will 3 workers take to build similar wall working 8 hrs a day step by step explanation

Answer 1

$\large \underline{ \underline{ \bold{ \: Answer : \: \: \: }}}$

$\to$ The required number is 56

$\large \underline{ \underline{ \bold{ \:Explanation : \: \: \: }}}$

Work = man × day × hour

$\to$ Work = 7 × 12 × 6 ----------- (1)

Work = man × day × hour

$\to$ Work = 3 × day × 8 --------- (2)

Since , the work is equal ie the same wall is built

Therefore ,

$\to$ 7 × 12 × 16 = 3 × days × 8

$\to$ Days = 7 × 12 × 16/3 × 8

$\to$ Days = 56

Answer 2

HEY HERE IS YOUR ANSWER

THIS PROBLEM CAN BE SOLVE BY THE HELP OF A FORMULA WHICH IS GIVE

MDH=MDH

MEN*DAYS*HOUR=MEN*DAYS*HOUR

On solving

we get

21 days is the correct answer

A PIC ATTACHED

YOU CAN EASILY UNDERSTAND

HOPE IT HELPS U

BE HAPPY