Correct option is D
Given:
Thief’s speed = 100 km/h,
Police speed initially = 75 km/h,
Police delay due to engine problem = 30 minutes (or 0.5 hours),
Police speed after the problem is fixed = 120 km/h
Formula Used:
Solution:
Distance by thief in 1 hour = 100 km
Distance by police in 1 hour = 75 km
total gap : 100 – 75 = 25 km
After engine problem thief went 50 km more in 30 min
Now total gap is: 25+50 = 75 km
new speed of police is 120 km/h
time taken to catch the thief is =
Now total taken time is = 1hr + 0.5hr + 3.75 hr = 5.25 hr
or 5 hours 15 minutes
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