Question : Two people ride towards each other from two places 55 km apart, one riding at 12 km/hr and the other at 10 km/hr. At what time will they be 11 kilometres apart?
Option 1: 2 hours and 30 minutes
Option 2: 1 hour and 30 minutes
Option 3: 2 hours
Option 4: 2 hours and 45 minutes
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Correct Answer: 2 hours
Solution :
Given: Two people ride towards each other from two places 55 km apart, one riding at 12 km/hr and the other at 10 km/hr.
Relative speed of the two people moving in opposite direction = (12 + 10) = 22 km/hr
Now to cover (55 – 11) = 44 km,
The time taken is = $\frac{44}{22}$ = 2 hours
Hence, the correct answer is 2 hours.
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