Mathematics
The speed of train A is x km/hr and speed of train B is (x - 5) km/h. How much time will each train take to cover 400 km ? 1. x/400 hrs and x - 5/400 hrs 2. x × 400 hrs and (x - 5) × 400 hrs 3. 400/x hrs and 400/x - 5 hrs 4. 800/x(x - 5) hrs
Related Questions
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320 m2 - (16 - x)(20 - x) m2
320 m2 - (16 - 2x)(20 - x) m2
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