Question 1141671
let x be Gary's daughter's age
:
Gary's age is x+31
:
(x+31) +30 = 2 * (x+30)
:
x+61 = 2x +60
:
x = 1
:
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Gary is 32 years old and his daughter is 1 year old
:
In 30 years Gary is 62 and his daughter is 31
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answer checks
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