1. One tap fills up a tank in two hours and the second tap empties it in 3 hours. How long will the tank take to get filled up if both the taps start functioning simultaneously ?





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  • By: anil on 05 May 2019 02.42 am
    The time taken when they work together is $$ frac{1}{frac{1}{2}-frac{1}{3}}$$ = 6 hours
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