If 18 men can cut a field in 35 days, then in how many days can 21 men cut the same field ?
Answer & explanation
Correct answer: option 3
Formula to be used here;
\( { M}_{1 } \) x \( { D}_{1 } \) = \( { M}_{2 } \) x \( { D}_{2 } \)
where, M = No. of men, D = No. of days,
⇒ Putting in the values,
⇒ 18 x 35 = 21 x \( { D}_{2 } \)
⇒ \( { D}_{2 } \) = 30 days.