Question

A can complete a work in 10 days while B can do it in 15 days. If A and B worked for 3 days and then B
left it, find the number of days that A will take to complete the remaining work.​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

one day work both A and B = 1/10 + 1/15 = 3+2/30= 1/6

work together for 3 days = 1/6 × 3= 1/2

the amount of work completed by A alone = 1-1/2= 1/2

remaining work completed by A = 1/2/1/10

5 days