Question : Rahul alone can complete a work in 10 days and Sonu alone can complete the same work in 15 days. If they work together for 4 days, then what part of total work is left?
Option 1:
Option 2:
Option 3:
Option 4:
Recommended: How to crack SSC CHSL | SSC CHSL exam guide
Don't Miss: Month-wise Current Affairs | Upcoming government exams
Correct Answer:
Solution :
Time taken by Rahul to complete the work = 10 days
Time taken by Sonu to complete the work = 15 days
Let the total work = LCM of 18 and 15 = 90 units
Efficiency of Rahul =
Efficiency of Sonu =
Total Efficiency of Rahul and Sonu = 9 + 6 = 15 units/day
Work was completed by them in 4 days = 15 × 4 = 60 units
Remaining work = 90 – 60 = 30 units
Remaining part of the work left =
Hence, the correct answer is
How to crack SSC CHSL
Candidates can download this e-book to give a boost to thier preparation.
