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A can finish a job in 12 days and B in 15 days. They start together, but A leaves after 3 days. How long does B take to finish the rest?

Class 8Sharing Work and WagesDirect and Inverse Proportions

A8 1/4 days
B9 days
C12 days
D6 3/4 days

Step-by-Step Solution

3 days together:

3 (\frac{5}{60} + \frac{4}{60}) = \frac{27}{60} = \frac{9}{20}

. Left

\frac{11}{20}

at

\frac{1}{15} : \frac{33}{4} = 8 \frac{1}{4}

days.

Answer: A) 8 1/4 days

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