Ashish goes to his friends house which is 12 km away from his house. He covers half of the distance at a speed of x km per hour and the remaining at (x + 2) km per hour. If he takes 2 hrs 30 min. to cover the whole distance, find the value of x.
Quadratic Equations
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Question

Ashish goes to his friends house which is 12 km away from his house. He covers half of the distance at a speed of x km per hour and the remaining at (x + 2) km per hour. If he takes 2 hrs 30 min. to cover the whole distance, find the value of x.

Quadratic Equations

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KnowledgeBoat · Accepted Answer

Given, Total distance = 12 km In first case : The speed for the first half = x km/hr. Time = Time1 = In second case : Speed for second half = (x + 2) km/hr Time2 = Time taken to cover the whole distance = 2 hrs 30 min. Multiplying by 2 on both sides of equation, (Since speed can’t be negative). x = 4km/hr Hence, x = 4km/hr.

Mathematics

Ashish goes to his friends house which is 12 km away from his house. He covers half of the distance at a speed of x km per hour and the remaining at (x + 2) km per hour. If he takes 2 hrs 30 min. to cover the whole distance, find the value of x.

Quadratic Equations

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