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Pipes R and T together can fill a tank in 40 minutes. If Pipe R alone can fill it in 90 minutes, in how many minutes can Pipe T alone fill it?
  • a)
    60
  • b)
    72
  • c)
    90
  • d)
    120
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Pipes R and T together can fill a tank in 40 minutes. If Pipe R alone ...
Solution:

Given:
- Pipe R and T together can fill a tank in 40 minutes.
- Pipe R alone can fill the tank in 90 minutes.

Let's assume:
- The rate at which Pipe R fills the tank = R
- The rate at which Pipe T fills the tank = T

Calculating the rates:
- Rate of R + Rate of T = Rate of R and T together
- 1/90 + 1/T = 1/40
- 1/T = 1/40 - 1/90
- 1/T = (9 - 4) / 360
- 1/T = 5 / 360
- T = 360 / 5
- T = 72

Conclusion:
- Pipe T alone can fill the tank in 72 minutes.
Therefore, the correct answer is option B) 72.
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Community Answer
Pipes R and T together can fill a tank in 40 minutes. If Pipe R alone ...

Hence, Option B is correct.
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Pipes R and T together can fill a tank in 40 minutes. If Pipe R alone can fill it in 90 minutes, in how many minutes can Pipe T alone fill it?a)60b)72c)90d)120Correct answer is option 'B'. Can you explain this answer?
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