Time and Work

P can do a piece of work in 12 days, while Q alone can finish it in 8 days. With the help of R, they can finish the work in 4 days. How long will R take to finish the work alone? P ஒரு வேலையை 12 நாட்களில் செய்ய முடியும், Q மட்டும் அந்த வேலையை 8 நாட்களில் […]

A and B can do a piece of work in 3 days. B and C can do the same work in 9 days while C and A can do it in 12 days. Find the time in which A, B and C can finish the work, working together? A மற்றும் B ஒரு வேலையை 3 நாட்களில்