Question: get solutions PROBLEM 18: One pipe can fill a goldfish pond in 45 minutes, and two pipes can fill the same pond in 20 minutes.

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PROBLEM 18: One pipe can fill a goldfish pond in 45 minutes, and two pipes can fill the same pond in 20 minutes. How long will it take for the second pipe alone the fill the pond? 0. 25 b. 36 C. 15 d. 30 PROBLEM 19: An airplane travels a distance of 500 km against the wind in one hour and 45 minutes. Traveling the same distance with the wind then, the airplane consumed one hour and 15 minutes, Find the velocity of the wind, a. 57.14 b. 342.85 C. 34.29 d. 42.86

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