Question
Download Solution PDFThe distance between two towns is covered In 7 hours and 30 minutes at the speed of 72 km/h. The time saved if the speed is increased by 25% is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
The distance between two towns is covered In 7 hours and 30 minutes at the speed of 72 km/h.
Concept used:
Distance = speed × time
Calculation:
Total distance is, 72 × 7.5 = 540 km
New speed is , 72 + 72/4 = 90 km
The required time, 540 / 90 = 6hr
Time saved 7.5 - 6 = 1.5 hr
∴ The correct option is 3
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