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Roorkee express normally reaches its destination at 50 km h in...

This question belongs to Arithmetic Ability Speed Time And Distance
Speed Time and Distance
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Roorkee express normally reaches its destination at 50 km/h in 30 hours. Find the speed at which it travels to reduce the time by 10 hours?

Answer & Solution
Correct Answer: Option C
let required speed be S km/h
50 × 30 = S × 20
S = 75 km/h
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