Solve the problem.
A bus covers a distance of 90km at a uniform speed. Had the speed been 15km/hr more it would have taken 30 minutes less for the journey. Find the original speed of the bus.
Answers
Answered by
2
The answer I think must be 110
Answered by
1
Answer:
45km/hr
Step-by-step explanation:
Let x km/hr be the constant speed of the bus.
The time taken to cover 90 km = 90/x hrs.
When the speed is increased bus 15 km/hr.
= 90/(x + 15)
It is given that the time to cover 90 km is reduced by 1/2 hrs. x2 + 15x = 2700
The speed of the bus cannot be -ve value
. ∴ The original speed of the bus is 45 km/hr
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