Ratio of speeds of two vehicles is 7 : 8. If the second vehicle covers 400 km in 5 hours, what is the speed of the first vehicle?
2nd vehicle covers 400 km in 5 hours
∴ speed of 2nd vehicle V1 =$$\frac{distance}{time }$$= 80 km/h
let the speed of 1st vehicle is V2
ATQ
speed of 1st vehicle/speed of 2nd vehicle = $$\frac{7}{8 }$$
$$\frac{V1}{V2 }$$ = $$\frac{7}{8 }$$
V₁ = $$80\times \frac{7}{8}$$ = 70 Km/h
speed of 1st vehicle is 70 km/h
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