1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# X and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone and then after 4 days Y joined him till the completion of the work. How long did the work last?

A
6 days
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
10 days
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
15 days
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
20 days
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

## The correct option is B 10 daysWork done by X in 4 days =(120×4)=15Remaining work =(1−15)=45(X+Y)'s 1 day's work =(120+112)=860=215Now, 215 is work done by X and Y in 1 day.So, 45 work will be done by X and Y in (152×45)=6 days.Hence, total time taken =(6+4) days =10 days.

Suggest Corrections
0
Join BYJU'S Learning Program
Related Videos
Time and Work
MATHEMATICS
Watch in App
Explore more
Join BYJU'S Learning Program