Question 936541: rico is 3 times as old his son. four years ago he was 4 times as old as his son was at that time. how old is the son? how old is rico?
You can put this solution on YOUR website! x = rico age now
y = son age now
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x = 3y
x - 4 = 4(y - 4)
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put the system of linear equations into standard form
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x - 3y = 0
x - 4y = -12
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = rico age now = 36
y = son age now = 12
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