Correct Answer - Option 4 : 27
Given:
M1 = 25 persons, D1 = 18 days, H1 = 6 hours
M2 = 20 persons, H2 = 5 hours
Formula used:
M1D1H1 = M2D2H2
M → Number of men, D → Day and H → Hours
Calculation:
M1D1H1 = M2D2H2
⇒ 25 × 18 × 6 = 20 × D2 × 5
⇒ D2 = 27 days
∴ The number of days they will finish the work is 27 days