Login / Signup

Question

‘A’ alone can complete a work in 15 days while ‘A’ and ‘B’ together can complete the same work in 10 days. How much percentage of the work, ‘B’ alone can complete in 21 days?

A 75%

B 77%

C 70%

D 79%

E 80%

Practice Next

More Time and work Questions

Amit', 'Bhanu', and 'Chintu' can finish a piece of work in 51 days, 85 days, and 102 days respectively. They all begin working together on the task, but 'B...
The efficiency ratio of Neha, Karan, and Ishaan is 16:11:14, respectively. Together, they can complete a task in 30 days. Neha and Karan started the task, ...
Komal and Seema individually can complete a task in ‘5a’ hours and ‘7a’ hours respectively. If they together can complete (4/5)th of the work in 7 hours, t...
‘P’ can complete a project in 12 days. ‘Q’ is 40% less efficient than ‘P’. Working together, ‘P’, ‘Q’ and ‘R’ can finish the job in 5 days. In how many day...
Person A is 80% more efficient than person B. A and B together can complete a certain task in 10 days, while B and C together can complete the same task in...
A does 2/5 of a work in 9 days. Then B joined him and they together completed the remaining work in 6 days. B alone can finish the whole work in
The time taken by P to complete a task is half of the time taken by Q. Q and R working together finish the task in 20 days, while P and R take 15 days. How...
A and B together can complete a piece of work in 35 days while A alone can complete 50% of the work in 20 days. Find the time taken by B to complete 12.5% ...
Anu can finish 25% of an assignment in 10 days, whereas Tanya can do 30% in 12 days. Anu works on it for 16 days and leaves. How long will Tanya take to wr...
Neil and Oscar together can build a wall in 24 days. Neil takes five times as long as Oscar to build the wall alone. Find the time taken by Oscar to build ...

Relevant for Exams:

Hey! Ask a query

ask-question