Question

9 men can complete the electric fitting in a 6 days how many days will it take if 27 men do the job​

Answer 1

Answer:

2 days

Step-by-step explanation:

9 men can do in 6 days

so, 1 man can do in 9×6 days

so, 27 men can do in 54/27 days =2 days. Ans 2 days

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Answer 2

Answer:

2 days.

Step-by-Step Explanation:

→ 9 men can complete the electric fitting in a building in 6 days. So, $9 \ratio 6$

→ 27 men can do the job in $a$ days. So, $27 \ratio a$

We get,

$\therefore 9 \ratio 6 \ratio \ratio 27 \ratio a$

If the number of men will increase, So, the number of days for the job will decrease. Hence, here is inverse proportion.

Since in inversely proportional term, where x and y has two variations,

$\it x_1 x_2 = y_1 y_2 = k$

Where, k is a constant term.

Here,

x :- $x_1 = 9, \: x_2 = 6$

y :- $y_1 = 27, \: y_2 = a$

Therefore,

$\therefore \rm 9 \times 6 = 27 \times a$

$\implies \rm 54 = 27a$

$\implies \rm a = \frac{54}{27}$

$\implies \rm a = \cancel{\frac{54}{27}}$

$\implies \rm \bf a = 2$

Hence, 21 men can do that job in 2 days.