- A24
- B18
- C20
- D30
Step-by-Step Solution
Together they fill 1/24 + 1/40 = 8/120 = 1/15 per minute, so 6 minutes fill 6/15 = 2/5. The remaining 3/5 at 1/40 per minute takes minutes.
Answer: A) 24
Two taps fill a cooler's tank in 24 minutes and 40 minutes. Both run for 6 minutes, after which the faster tap is turned off. How many more minutes does the slower tap take to fill the tank?
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