Father and daughter

When I was 11, my father was 35 years old. Now, my father has three times older than me. How old is she?

Correct answer:

y =  12

Step-by-step explanation:

35+x = 3·y
y = 11+x

x-3y = -35
x-y = -11

Row 2 - Row 1 → Row 2
x-3y = -35
2y = 24

y = 24/2 = 12
x = -35+3y = -35+3 · 12 = 1

x = 1
y = 12

Our linear equations calculator calculates it.

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Showing 1 comment:
Math student
Ten years ago a father was three times as old as his son.In six more years,the father will be twice as old as his son

1 year ago  1 Like

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