15 men can complete a task in 10 days. In how many days can 20 men complete the same task?
Answer & explanation
Correct answer: option 2
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 values in the formula,
⇒ 15 x 10 = 20 x \( { D}_{2 } \)
⇒ \( { D}_{2 } \) = 7.5 days.