Question

assistant can be filled by three taps A ,B and C when turned on separately in 12 minutes 10 minutes and 15 minutes respectively if all are turned on together for 2whole 2 by 3 minutes and if p and C are 10 turn off how much time will A
alone take to fill the cistern​

Answer 1

Answer:

All the three pipes working together can fill the tank in 15 minutes. ... They are all turned on at once, but after 3 minutes C is turned off.

Answer 2

Answer:

LCM of 12,10 and 15 = 60

Efficiency = 5, 6 and 4

so together they fill = 5+6+4 = 15 litre in one min .

in 2(2/3) in they fill = 8*15/3 = 40 litre

now left to be fill = 60-40 = 20 litre .

now both B & C are closed .

so,

this 20 litre will be filled by A in = 20/5 = 4 min (Ans)

(Mark as brainlist)