SOLUTION: my grandmother age has a units digit of three, and the aquare of the tens digits is her age reversed. ho old is my grandmother?

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Question 83278: my grandmother age has a units digit of three, and the aquare of the tens digits is her age reversed. ho old is my grandmother?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
my grandmother age has a units digit of three, and the aquare of the tens digits is her age reversed. how old is my grandmother?
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Assuming grandmother's age is a two digit number, it can be written
as 10t+3 where t is the ten's digit. The reverse is 3*10 + t
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EQUATION:
t^2 = 3*10+t
t^2-t-30=0
(t-6)(t+5)=0
t=6
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Grandma is 63
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Cheers,
Stan H.