A salesman travels from Delhi to Ambala at 30 km/h and returns at 90 km/h. If the total time taken is 8 hours, find the total distance covered by him.

A480 km

B240 km

C360 km ✓ Correct

D280 km

Correct answer: (C) 360 km

Explanation

The total distance covered is 360 km.

Let one-way distance = d, so d/30 + d/90 = 8.

(3d + d)/90 = 8 gives 4d = 720.

d = 180 km one way.

Total distance = 2 x 180 = 360 km.

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