Multiple choice

Pankaj travelled a distance of $21 km$ in a marathon, starting from Supreme Business Park to back in Supreme Business Park again. His normal speed was was $7 km/hr$. The time taken by Pankaj is $3 \ \ x$. What is $x$.

  1. Minutes

  2. Hours

  3. Seconds

  4. Pounds
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Distance = 21 km, Speed = 7 km/hr. Time = Distance / Speed = 21 / 7 = 3 hours. Since the time is given as 3x, x must be hours.

AI explanation

Using the Time, Speed and Distance formula, time equals distance divided by speed. Substituting the given values gives 21 km divided by 7 km/hr, which equals 3 hours, meaning x represents Hours.

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