Question

If 10 men can dig a trench in 12 days, how long will 4 men

take to do the some work?​

Answer 1

Answer:

30 days

Explanation:

If 10 men can dig a trench in 12 days

Then 1 man can dig it in 12×10 days

hen 1 man can dig it in 12×10 days=120 days

hen 1 man can dig it in 12×10 days=120 days4 men can do it in 120/4 days

hen 1 man can dig it in 12×10 days=120 days4 men can do it in 120/4 days=30 days

Answer 2

$\huge\fbox\red{☞Answer}$

If 10 men can dig a trench in 12 days.

Then, 4 men will take..

10 men can dig a trench in 12 days.

$\mathtt{4 \: men \: can \: dig \: in \: \frac{10 \times 12}{4} days(less \: men \: more \: days) = 30 \: days}$

Hence,4 men can dig a trench in 30 days.

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☆Ratio :

A comparision between two quantities of the same kind and in the same units,by dividing one with the other is called ratio.