Rita and Neha can do certain work individually in 20 hts. and 25 hrs, respectively. How much time will it take if they work together to complete the work? solution class 8 maths.
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Answer:
Rita's 1 day work - 1/20
Neha's 1 day work - 1/25
(Rita+Neha) 's 1 day work= 1/20+1/25
= 100/9
They together complete the whole work in= 9/100 = 11 1/9
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