The speeds of 2 trains differ by 15 km/h. the slower train covers 4 hours what the faster train covers in 3 hours. find the speed of each train.
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johb09513
01.03.2018
Math
Secondary School
answered
The speed of two trains differ by 15km/hour. The slower train covers in four hours while the faster one
covers the same distance in three hours. Find the speed of each train.
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Aanvigahoi
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let the distance covered be x km
speed of slower train =x/4
speed of faster train=x/3
thus...
x/4 + 15/1 = x/3
15 = x/3 - x/4
15 = x/12
15×12=x
180km =x
speed=>
slower train=180/4=45km/hour
faster train = 180/3 =60km /hour
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