SOLUTION: two trains going in opposite directions leave at the same time. train b travels 25 mph faster than train a. in 8 hours the trains are 920 miles apart. find the speed of each
Algebra.Com
Question 823097: two trains going in opposite directions leave at the same time. train b travels 25 mph faster than train a. in 8 hours the trains are 920 miles apart. find the speed of each
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
---
x = speed of trainA
y = speed of trainB
y = x + 25
---
relative speed of the two trains:
s = d / t
s = x + y
x + y = d / t
x + y = 920 / 8
x + y = 115
---
system of linear equations:
y = x + 25
x + y = 115
---
put the system of linear equations into standard form
---
x - y = -25
x + y = 115
---
copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
---
answer:
x= trainA = 45 mph
y= trainB = 70 mph
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php
RELATED QUESTIONS
Two trains going in opposite directions leave at the same time. Train B travels 25 mph... (answered by addingup)
Two trains going in opposite directions leave at the same time. Train B travels 25 mph... (answered by ikleyn)
Two trains going in opposite directions leave at the same time. train b travels 15 mph... (answered by macston)
Two trains going in opposite directions leave at the same time. Train B travels 15 mph... (answered by ikleyn)
two trains going in opposite directions leave at the same time train b travels 15 mph... (answered by josmiceli)
Two trains going in opposite directions leave at the same time. Train B travels 5 mph... (answered by richwmiller)
Two trains going in opposite directions leave at the same time. Train B travels 5 mph... (answered by stanbon)
Two trains going in opposite directions leave at the same time. train B travels 5 mph... (answered by rfer)
Two trains going in opposite directions leave at the same time. Train B travels 5 mph... (answered by jorel555)