A train covers the distance y miles between two cities at a speed of x mph, arriving 2 hours late. What speed would permit the train to arrive on schedule?
A.
y/(x-2y) mph
B.
y/(x+2y) mph
C.
(xy)/(x-2y) mph
D.
(xy)/(y-2x) mph
E. None of these
সঠিক উত্তরঃ
E.
None of these
Explanation:
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