1 Answers
Option 4 : 6 days
Given:
A can complete a work in 12 days
B can complete the same work in 9 days
A left the work 2 days before completion
Formula Used:
Work = Efficiency × Time
Calculation:
Let the whole work be completed in d days
Total work = LCM of 12, 9 days
= 36 days
Efficiency of A = 36/12
= 3
Efficiency of B = 36/9
= 4
Total work = work done by A + work done by B
⇒ 36 days = 3(d – 2) + 4 × d
⇒ 3d + 4d = (36 + 6) days
⇒ 7d = 42 days
⇒ d = 6 days
∴ The whole work will be completed in 6 days.
5 views
Answered