Varun has plans to meet his friend at the outskirts of his hometown. If he walks 20 km at 4
km/hr, he will be late by 45 minutes. If Varun walks at 6 km/hr, how much earlier than the
decided time will he reach?
75 minutes
45 minutes
50 minutes
55 minutes
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Time taken to cover 20 km at speed 5 km/hr = 4 hours
∴ Fixed time = 4 hour - 40 minutes = 3 hour 20 min
Time taken to cover 20 km at the speed 8 km/hr = 20/8 = 2 hours 30 minutes
∴ Required time = 3 hours 20 minutes - 2 hr 30 min
=50 minutes
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