a can do.a piece of work in 6 days and B in 8 days each working 7hours a day In what time will they finish it together, working

Question

lys-0071 [83]

2 years ago

14

a can do.a piece of work in 6 days and B in 8 days each working 7hours a day In what time will they finish it together, working

8hrs a day

Mathematics

1 answer:

Irina-Kira [14] · Answer 1 · 2022-04-07T09:44:46+03:00

<h2>A can complete the work in 7*6 hrs = 42 hrs. </h2><h2> </h2><h2>A can complete in 1 hr = 1/42 part. </h2><h2> </h2><h2>B can complete the work in 7*8 hr = 56 hrs. </h2><h2> </h2><h2>A&B together do in 1 hr = 1/42 + 1/56 = 7/168 = 1/24 part. So they will do in 8 hrs = 8*1/24 = 1/3 part. </h2><h2> </h2><h2>Hence they need 1÷1/3 = 3 days to complete the work.</h2>