Father and daughter

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

Result

y =  12

Solution:


35+x = 3*y
y = 11+x

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

x = 1
y = 12

Calculated by our linear equations calculator.







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To solve this example are needed these knowledge from mathematics:

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