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Time, Speed & Distance · Question 25 of 71

Question 25

EasyOriginal question

From a crossing, Anjali cycles north at 12 km/h and Irfan cycles south at 18 km/h, both starting together. How far apart are they after 2 hours 30 minutes?

Options for question 25

Show the answer and explanation
CorrectNot quiteAnswer D

Correct answer: D

Explanation

  1. Opposite directions: they separate at 12+18=3012 + 18 = 30 km/h.

  2. Distance apart =30×2.5=75= 30 \times 2.5 = 75 km.

Worth noting

15 km uses the difference of speeds; 45 km is how far Irfan alone has gone.

Concept
Separation speed of objects moving apart is the sum of speeds
Typical time
30 s
Your time
—
The rule this testsRelative speed
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