Multiple choice

Aaradhya goes to her school by bicycle at a speed of 15 km/hr. and reaches 6 minutes earlier. If she goes at a speed of 12 km/hr., she reaches 5 minutes late. The distance of her school is आराध्या अपने स्कूल साइकिल से 15 किमी/घंटा की चाल से जाती है और 6 मिनट पहले पहुँचती है | यदि वह 12 किमी/घंटा की चाल से जाती है तो 5 मिनट देर से पहुँचती है | उसके स्कूल की दूरी है

  1. 10 km/किमी.

  2. 12 km/किमी.

  3. 11 km/किमी.

  4. 15 km/किमी.

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let distance = d km and scheduled time = t hours. At 15 km/h, reaches 6 min early: d/15 = t - 6/60. At 12 km/h, reaches 5 min late: d/12 = t + 5/60. Subtract first from second: d/12 - d/15 = 11/60. d(5-4)/60 = 11/60, so d/60 = 11/60, giving d = 11 km.