Solve the problem. Round your answer to the nearest tenth, if necessary.Two pipes together can fill a large tank in 10 hr. One of the pipes, used alone, takes 15 hr longer than the other to fill the tank. How long would each pipe take to fill the tank alone?
A. 10 hr; 25 hr
B. 15 hr; 30 hr
C. 25 hr; 40 hr
D. 12.5 hr; 27.5 hr
Answer: B
Mathematics
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