- A24 min
- B min
- C60 min
- D min
Step-by-Step Solution
Outlet rate → min min is the two inlets together.)
Answer: D) min
A cistern has two inlets that fill it in 15 and 20 minutes, and an outlet. With all three open, the empty cistern fills in 24 minutes. How long would the outlet alone take to empty the full cistern?
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