Question

46. A tap fills a tank completely with water in 5 hours. The tap on the bottom of
tank being kept open, it takes 6 hours to fill the tank with water. In how many
hours does the tap at the bottom completely drain out water from the tank?
(1) 11 hours
12) 30 hours
(3) 22 hours
14) 15 hours​

Answer 1

Answer:

11 hours

Step-by-step explanation:

I hope this is right & helpful

Answer 2

correct answer 11 hours (1)

Let the rate of which water is filled =x lit/hr

∴ Volume of tank =5x litre

Let the rate at which water is drained =y lit/hr

A/Q, 6(x−y)=5x

⇒6x−6y=5x

⇒6y=x

⇒y=x/6

Time to taken water completely =

y

5x