A truck travels at 90 km/hr for the first 1\(^\frac{1}{2}\) hours. After that it travels at 70 km/hr. Find the time taken by the truck to travel 310 kilometres.

A truck travels at 90 km/hr for the first 1\(^\frac{1}{2}\) hours. Aft

1.	A truck travels at 90 km/hr for the first 1\(^\frac{1}{2}\) hours. After that it travels at 70 km/hr. Find the time taken by the truck to travel 310 kilometres.
A.	4 hrs
B.	3 hrs
C.	2.5 hrs
D.	3.5 hrs
Answer» B. 3 hrs

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A truck travels at 90 km/hr for the first 1\(^\frac{1}{2}\) hours. After that it travels at 70 km/hr. Find the time taken by the truck to travel 310 kilometres.

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