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    				| 1. | Rajan can do a piece of work in 24 days while Amit can do it in 30 days. In how many days can they complete it, if they work together? | 
| Answer» We know that, Number of days Rajan required to do piece of work = 24 days Number of days Amit required to do piece of work = 30 days ∴ We can calculate, work done by Rajan in 1 day = 1/24 Work done by Amit in 1 day = 1/30 Now, work done by both Rajan and Amit together in 1 day= 1/24 + 1/30 = 54/720 = 3/40 ∴ they can do work together in 40/3 days = 13 1/3 days | |