A work is completed by three person Ajit,Sujeet and Raneet. Ajit alone takes 10 hours to complete a single product but Sujeet and Ranjeet working together takes 4 hours, for the completion of the same product. If all of them worked together and completed 14 products, then how many hours have they worked?
1/x=10 and 1/y+1/z=1/4 (Given)
In 20 hours, working together they will complete 7 products.
Thus in 40 hours they will complete 14 products
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