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TU60. A does 20% less work than B. If A cancomplete a piece of work in 7 hrs, then B can doit in

Answer»

Ratio of percentage of work done by A and B = 80:100Suppose B takes 'x' hours time to complete the work.So,⇒ 80:100::x:15/2⇒ 100x = 15/2*80⇒ x = 600/100⇒ x = 6 hours (Time taken by B)



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