Question : To cover a certain distance at a speed of 60 km/hr, a train takes 15 hours. If it covers the same distance in 12 hours, what will its speed be?
Option 1: 65 km/hr
Option 2: 70 km/hr
Option 3: 75 km/hr
Option 4: 80 km/hr
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Correct Answer: 75 km/hr
Solution :
Given: A train takes 15 hours to cover a certain distance at a speed of 60 km/hr.
Distance = Speed × Time = 15 × 60 = 900 km
$\therefore$ Required speed to cover this distance in 12 hours = $\frac{900}{12}$ = 75 km/hr
Hence, the correct answer is 75 km/hr.
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