Father and son

Father is three times older than his son. 12 years ago father was nine times older than the son. How old are father and son?

Correct result:

x =  48
y =  16

Solution:


x = 3y
x-12 = 9(y-12)

x = 3•y
x-12 = 9•(y-12)

x-3y = 0
x-9y = -96

x = 48
y = 16

Our linear equations calculator calculates it.



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Most Popular comments:
#
Math student
when I was 11 my father was 35 year old. Now, father has three times older then me. How old is she? pls solution the problem

1 year ago  5 Likes
Showing 2 comments:
#
Math student
when I was 11 my father was 35 year old. Now, father has three times older then me. How old is she? pls solution the problem

1 year ago  5 Likes
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