two men can do a piece of work in 6 hours and 14 hours repectively. after the first has worked for 2 hours, he joined by other. by when should the work be completed? give detail explaination... (hint... Ans- 1hr 36min) ..
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that's my answer according to me however I know that and another thing is up to you how will you take this unit take it positively or negatively it's up to you ok
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