A. 660 km/hr
B. 680 km/hr
C. 700 km/hr
D. 720 km/hr
Distance = Speed x Time = 240 x 5 km
New time =5/3 hr
Hence, new speed = Distance/Time =240*5/5/3
=240×3=720 km/hr
Correct Answer: D. 720 km/hr ✔
Last Updated: February 07, 2020
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