35 girls can complete a piece of work in 12 days. If 5 fewer girls are put on the work, in how many days can they complete the work?
Answer & explanation
Correct answer: option 4
Formula to be used,
\( { M}_{1 } \) x \( { D}_{1 } \) = \( { M}_{2 } \) x \( { D}_{2 } \)
where, M = No. of Women, D = No. of Days,
⇒ 35 x 12 = 30 x \( { D}_{2 } \)
⇒ \( { D}_{2 } \) = 14 days.