Discussion

Explanation:

Consider the solution for the first question of this set.

∴ Effective horizontal distance travelled = 6 + 3 = 9 km

∴ Effective vertical distance travelled = 8 + 4 = 12 km

∴ Distance between starting and end point = $\sqrt{9^2+{12}^2}$ = 15 kms.

Hence, option (d).

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