Question
The speed ratio of Y : Z is 3 : 2. After increasing his
speed by 50%, Y covers 270 km in 3 hours. How much time will Z take to cover 200 km?Solution
ATQ, Increased speed of Y = (270/3) = 90 km/hr
So, actual speed of Y = 90 ÷ 1.50 = 60 km/hr
Or, speed of Z = 60 × (2/3) = 40 km/hr
Therefore, required time = (200/40) = 5 hours
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