A person has to cover a distance of 204 km. If he increases his speed by 5 km/hr he reaches 5 hour early. Find his initial speed (in km/hr).
Answer & explanation
Correct answer: option 4
Let the initial speed = x km/hr
ATQ,
\(\frac{204}{x}-\frac{204}{x+5}=5\)
let x = 12 (by using option)
\(\frac{204}{12}-\frac{204 }{17}=5\)
17 – 12 = 5 (satisfied)
x = 12