Two pipes X and Y can fill an empty tank in ‘t’ minutes. If pipe X alone takes 6 minutes more than ‘t’ to fill the tank and Y alone takes 54 minutes more than ‘t’to fill the tank, then X and Y together will fill the tank in:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 18 sec
Trick : X and Y together will fill the tank in = √ (54 × 6) = √ 324 = 18 min