Ram can complete the work in 10 hours, Ajit in 12 hours and Suresh in 15 hours. All of them began the work together, but Ram had to leave the work after 2 hours of the start and Ajit left 3 hours before the completion of the work. How long did the work last.

8 hrs

No worries! We‘ve got your back. Try BYJU‘S free classes today!

7 hrs

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

9 hrs

No worries! We‘ve got your back. Try BYJU‘S free classes today!

8.5 hrs

No worries! We‘ve got your back. Try BYJU‘S free classes today!

can’t be determined

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B 7 hrs
Soln: Option (b)

In 1 hour Ram can do $10 %$ of the work, Ajit can do $\frac{100}{12} %$ of the work and Suresh can do $\frac{100}{15} %$ of the work.

So, total number of hours = 2 + 2 + 3 = 7 hours. Hence option (b)

Suggest Corrections

Similar questions

A and B can do a piece of work in 25 hours and 30 hours respectively. They began to do the work together but A leaves after some hours and then B completes the remaining work in 18 hours. The number of hours after which A left the work was?

18 men can complete a piece of work in 6 hours, while 30 women can complete the same work in 8 hours. 9 men start working on the job and after working for 3 hours, all of them stopped working. How many women should be put on the job to complete the remaining work, if it is to be completed in 6 hours?

P

can complete a work in

12

days working

8

hours a day.

Q

can complete the same work in

8

days working

10

hours a day. If both

P

and

Q

work together, working

8

hours a day, in how many days can they complete the work?

Ted can complete a work in 8 days working 12 hours a day. Sid can complete the same work in 16 days working 5 hours a day. If both Ted and Sid work together, working 6 hours a day, in how many days can they complete the work?

Q. Ram can finish a work in

45

minutes. His son can finish a work in

3

hours. If they work together, how long will it take them to finish the work?

Join BYJU'S Learning Program

Ram can complete the work in 10 hours, Ajit in 12 hours and Suresh in 15 hours. All of them began the work together, but Ram had to leave the work after 2 hours of the start and Ajit left 3 hours before the completion of the work. How long did the work last.

The correct option is B 7 hrsSoln: Option (b) In 1 hour Ram can do 10% of the work, Ajit can do 10012% of the work and Suresh can do 10015% of the work. So, total number of hours = 2 + 2 + 3 = 7 hours. Hence option (b)

The correct option is B 7 hrs
Soln: Option (b)

In 1 hour Ram can do $10 %$ of the work, Ajit can do $\frac{100}{12} %$ of the work and Suresh can do $\frac{100}{15} %$ of the work.

So, total number of hours = 2 + 2 + 3 = 7 hours. Hence option (b)