- A10
- B12
- C22.5
- D9
Step-by-Step Solution
Together they fill 1/15 + 1/30 = 3/30 = 1/10 of the tank per hour, so the tank is full in 10 hours.
Answer: A) 10
Two taps fill Kavya's rooftop water tank: the first alone takes 15 hours and the second alone takes 30 hours. If both taps run together on the empty tank, in how many hours is it full?
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