Algebra inequalities

label Algebra
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A freight train takes 1and 3/4 hours to get to the city;a passenger train averaging 64 mph faster takes only 75 mins to cover the shames distance. What is the average speed of the passenger train

Jun 2nd, 2015

Let the speed of the freigh train be x mph

so speed of the passenger train = (x+64) mph

75 minutes = 3/4 hours

x * 7/4 = (x+64) 3/4

7x = 3x+192

4x =192

x = 48 mph

So so speed of the passenger train = (x+64) mph = 48+64 = 112 mph

Please let me know if you have any questions and best me if you are satisfactory.


Jun 2nd, 2015

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