A can do a piece of work in 30 days and B can finish in 25 days. They work together fof 10 days and then A leaves. How much time B will take to finish the remaining work?
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Answer:
20/3 days
Step-by-step explanation:
A do a piece of work in one day = 1/30
B do a piece of work in one day = 1/25
Together A and B do a piece of work in one day = 1/30 + 1/25 = 11/150
Together A and B do a piece of work in ten day = 11/150 × 10 = 110/150
work left = 150/150 - 110/150 = 40/150
no. of days B will take to complete the remaining work = 40/150 ÷ 1/25 = 40/150 × 25 = 1000/150 = 20/3
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