Question

three pipes a b and c can fill a swimming pool in 6 hours after working together for two hour she is closed and A and B fill the remaining remaining part in 7 hours find the number of hours taken by sea alone to fill the swimming pool​

Answer 1

8 whole 1/2

Step-by-step explanation:

1 tap can fill the tap in = (3×6)hours

=>18 hours

1 tap's 1 day work =1/18

total no. of days =(2+7)hours

=>9 hours

remaining work=1-1/18

=>(18-1)/18

=>17/18

c can finish in =>(17/18)×9

=>17/2

=> 8.5 hours