A man walking at a speed of 8 km/hr covers a certain distance in 1 hour 45 minutes. If he runs at a speed of 10 km/hr, in what time he will cover the same distance?A)70minB)84minC)65minD)90min
Question
A man walking at a speed of 8 km/hr covers a certain distance in 1 hour 45 minutes. If he runs at a speed of 10 km/hr, in what time he will cover the same distance?A)70minB)84minC)65minD)90min
Solution
First, we need to find out the distance the man covers walking at a speed of 8 km/hr for 1 hour 45 minutes.
1 hour 45 minutes is 1.75 hours in decimal form.
So, the distance covered = speed * time = 8 km/hr * 1.75 hr = 14 km.
Next, we need to find out how long it would take the man to cover the same distance running at a speed of 10 km/hr.
Time = Distance / Speed = 14 km / 10 km/hr = 1.4 hours.
1.4 hours is 84 minutes in decimal form.
So, the answer is B) 84 minutes.
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