Problema Solution
The sum of the speeds of two trains is 725.6 mph. If the speed of the first train is 8.4 mph faster than the second train find the speed of each
Answer provided by our tutors
let
x = the speed of the first train
y = the speed of the second train
the sum of the speeds of two trains is 725.6 mph
x + y = 725.6
the speed of the first train is 8.4 mph faster than the second train
x = 8.4 + y
by solving the system of equations
x + y = 725.6
x = 8.4 + y
we find
x = 367 mph
y = 358.6 mph
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