Mr. Walker travels y miles in z hours and then w miles in x hours. How many hours will be needed to travel 750 miles if he maintains this average rate?
A. \(750/w+y\)
B. \(750/w+x+y+z\)
C. \(w+y/750(x+z)\)
D. \(750(x+z)/w+y\)
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সঠিক উত্তরঃ
D.
\(750(x+z)/w+y\)
Explanation:
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