Question

A and B can finish a plece of work in 16 days and 12 days respectively .A. started the work and worked at it for 2days .He was then joined by B.find the totai time taken to finish the work​

Answer 1

Step-by-step explanation:

A can do 1/16 work in one day

B can do 1/12 work in one day

A+B = 1/16 +1/12 =3/48 + 4/48 =7/48 in one day

A worked for 2 days, work done = 1/16 ×2 = 1/8

remaining work =1 - 1/8= 7/8

7/8 work done by A+B in 48/7 ×(7/8)= 6 days