x could complete a piece of work in 16 hour and y could complete the same work in 20 hours they work together for 8 hours and then y left find the time required by x to complete the remaining work alone
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X could complete a piece of work in 16 hours and Y could complete the same work in 20 hours. they work together for 8 hours. ... so remaining are8 hours.18-Feb-2021
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