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The ratio between the speeds of two buses is 11 : 9. If the second bus runs 270 kms in 15 hours, then the speed of the first bus is?
- A23 km/hr
- B11 km/hr
- C2 km/hr
- D22 km/hr
Answer not set
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CCommunity
Let the speeds of the two buses be 11x and 9x respectively.
Speed of the second bus = 270/15 = 18 km/hr (? Speed = Distance/Time)
⇒ 9x = 18
⇒ x = 18/2 = 2
Speed of the first bus = 11x = 11 × 2 = 22 km/hr
∴ Speed of the first bus = 22 km/hr
Speed of the second bus = 270/15 = 18 km/hr (? Speed = Distance/Time)
⇒ 9x = 18
⇒ x = 18/2 = 2
Speed of the first bus = 11x = 11 × 2 = 22 km/hr
∴ Speed of the first bus = 22 km/hr