A motorcycle covers a total distance of $588\,\text{km}$ in $9$ hours. It covers part of the distance at $60$

A motorcycle covers a total distance of $588\,\text{km}$ in $9$ hours. It covers a part of the distance at $60\,\text{km/h}$ speed and the balance at $72\,\text{km/h}$ speed. Find the time it travelled at $72\,\text{km/h}$ speed.

A. $4\text{ h}$
B. $3 \text{ h} \,30 \text{ min}$
C. $3 \text{ h}\, 24\text{ min}$
D. $3 \text{ h}\, 15\text{ min}$
E. $3 \text{ h}$

The OA is A

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