[NOTE: NO OPTION MATCHES THE ANSWER because values provided are wrong but I have solved the qyestion with the given values for your understanding, If B and C will take 1/2 hours then the answer will be 1 that is Option E]
Answer:
Pumps A and B,
A + B = 5/6
Pumps A and C,
A + C = 3/2
Pumps B and C,
B + C = 2
Now we have to find
A + B + C = ?
For this we will add all of the above equations from both sides.
A+B + A+C +B+C = 5/6 + 3/2 + 2
Taking LCM on R.H.S,
2A + 2B + 2C = (5+9+12)/6
2(A+B+C) = 26/6
2(A+B+C)= 13/3
A+B+C = 13/6
It will take 13/6 hours if A,B and C are pumped simultaneously.
[NOTE: NO OPTION MATCHES THE ANSWER because values provided are wrong but I have solved the qyestion with the given values for your understanding, If B and C will take 1/2 hours then the answer will be 1 that is Option E]
Step-by-step explanation:
