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प्रश्न
The speed of train A is x km/h and speed of train B is (x – 5) km/h. How much time will each train take to cover 400 km?
पर्याय
`x/400` hrs and `(x - 5)/400` hrs
x × 400 hrs and (x – 5) × 400 hrs
`400/x` hrs and `400/(x - 5)` hrs
`800/(x(x - 5))` hrs
MCQ
उत्तर
`bb(400/x hrs and 400/(x - 5) hrs)`
Explanation:
Time taken by train A to covered a distance of 400 km @ x km/h
= `"Distance"/"Speed"`
= `400/x` hrs
Time taken by train B to covered a distance of 400 km @ (x – 5) km/h
= `400/(x - 5)` hrs
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