Question

A can do 2 /3 of a certain work in 12 days, and b can do 1/6 of the same work in 4 days. Find out how many days will they together complete the work

Answer 1

Answer:

72/7 days

Step-by-step explanation:

hope it helps you.thank you

Answer 2

Answer:

Time taken by both A and B to complete full work will be 10(2/7) days

Step-by-step explanation:

A can do 2/3 of the work in 12 days

=> A can do full work in = 12 x 3/2 = 18 days

=> work done by A in one day = 1/18

B can do 1/6 of work in 4 days

=> B can do full work in = 4 x 6 = 24 days

=> work done by B in one day = 1/24

Hence work done by both A and B in one day together

= 1/18 + 1/24

= 7/72

So time taken by both A and B to complete full work = 72/7 = 10(2/7) days