Karan can do a piece of work in 20 days and Sarosh can do the same in 5 days. If they work together and Karan is only 80% as efficient, how long does it take to complete the work?

5 days

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

6 days

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

7 days

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

8 days

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

25/6 days

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

Open in App

Solution

The correct option is E
25/6 days

Work done by Karan in 1 day if he is 80% efficient = $\frac{4}{5} \times \frac{1}{20} = \frac{1}{25}$

Work done by Sarosh in 1 day = $\frac{1}{5}$

Work done by Karan and Sarosh in 1 day = $\frac{6}{25}$

Complete work will be done by both in $\frac{25}{6}$ days

Suggest Corrections

Similar questions

Karan can do a piece of work in 8 days, whereas Sarosh can do the same in 4 days. They were made to work together and completed the work in ‘x’ days which is $\frac{10}{3}$ days before the deadline given to them. In how many days were they supposed to complete the work?

Q. A can do a piece of work in

5

days and B can do the same work in

20

days. In the same assignment, they work together for

2

days. Due to some emergency, they opted out from this assignment after working together for

2

days. Then to complete the pending work, C joined who is half as efficient as A. How many days C will take to finish the remaining work ?

A

can do a piece of work in

20

days and

B

can do it in

30

days. How long will they take to do the work together?

Q. A can do a piece of work in 20 days and B can do the same work in 15 days.How long will they take to finish the work, if both work together?

A can do a piece of work in 40 days. He works at it for 8 days and then B fineshes the remaining work in 16 days. How long will they take to complete the work if they do it together.

Join BYJU'S Learning Program

Karan can do a piece of work in 20 days and Sarosh can do the same in 5 days. If they work together and Karan is only 80% as efficient, how long does it take to complete the work?

The correct option is E 25/6 days Work done by Karan in 1 day if he is 80% efficient = 45 × 120 = 125 Work done by Sarosh in 1 day = 15 Work done by Karan and Sarosh in 1 day = 625 Complete work will be done by both in 256 days

The correct option is E
25/6 days

Work done by Karan in 1 day if he is 80% efficient = $\frac{4}{5} \times \frac{1}{20} = \frac{1}{25}$

Work done by Sarosh in 1 day = $\frac{1}{5}$

Work done by Karan and Sarosh in 1 day = $\frac{6}{25}$

Complete work will be done by both in $\frac{25}{6}$ days