SOLUTION: 6 years ago carl was 3 times as old as john. 8 years hence, 4 times carl's age will be 5 times john's age. Find their present ages.

Question 925925: 6 years ago carl was 3 times as old as john. 8 years hence, 4 times carl's age will be 5 times john's age. Find their present ages.
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = carl age now
y = john age now
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x - 6 = 3(y - 6)
4(x + 8) = 5(y + 8)
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x - 6 = 3y - 18
4x + 32 = 5y + 40
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put the system of linear equations into standard form
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x - 3y = -12
4x - 5y = 8
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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 = carl age now = 12
y = john age now = 8
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Solve systems of linear equations up to 6-equations 6-variables:
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