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Q: Sabrina travelled 8 km/h by foot and 13 km/h on a bicycle. She covered 84 km in 8 hours, for how many hours did she ride a cycle.
  • A. 4
  • B. 3
  • C. 5
  • D. 2
Correct Answer: Option A - Let Sabrina cycled till t time According to the question, 8 (8 – t) + 13t = 84 64 – 8t + 13t = 84 5t = 20 t = 4 Hence Sabrina cycled till 4 hours.
A. Let Sabrina cycled till t time According to the question, 8 (8 – t) + 13t = 84 64 – 8t + 13t = 84 5t = 20 t = 4 Hence Sabrina cycled till 4 hours.

Explanations:

Let Sabrina cycled till t time According to the question, 8 (8 – t) + 13t = 84 64 – 8t + 13t = 84 5t = 20 t = 4 Hence Sabrina cycled till 4 hours.