| Sunil left for city X from city Vat 5: 55 am. He travelled at the speed of 80 km/h for 2 h 15 min. After that the speed was reduced to 60 km/h. If the distance between two cities is 350 km, at what time did Sunil reach the city Y? |
A) 10: 05 am
B) 10: 35 am
C) 9: 50 am
D) 9: 55 am
E) 11: 00 am
Correct Answer: E
Solution :
| Distance between two cities \[=350\,\,km\] |
| Distance travelled by Sunil with the speed of 80 km/h in |
| \[2\frac{1}{4}h\]or \[2.25\,\,h=80\times 2.25\,\,km=180\,\,km\] |
| Remaining distance \[=35-180=170\,\,km\] |
| Speed \[=60\,\,km/h\] |
| Time taken to reach in city \[X=\frac{170}{60}=2.83\,\,h\] |
| Total time \[2.25+2.83=5.08\,\,h\] |
| \[\therefore \] \[\approx 305\min =5\,\,h\,\,5\min \] |
| Sunil started journey at 5: 55 am and finished the journey = 11: 00 am |
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