Question 66

The ratio between the speeds of twotrains is 2 : 5. If the first train runs 250 km in 5 h, then the difference between the speeds(in km/h) of both the trains is:

Solution

let speed of first train=S1 and speed of second train=S2

$$\frac{S1}{S2}$$=$$\frac{2}{5}$$

Speed of first train=$$\frac{distance}{time}$$=$$\frac{250}{5}$$=50 km/hr

from the ratio,

$$\frac{50}{S2}$$=$$\frac{2}{5}$$

S2=125 km/hr

difference between the speed of trains=S2-S1=125-50=75 km/hr

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