SOLUTION: Tad’s sister Tina asks him how old he is. Tad tells her that if she squares his age Nd subtracts 3 times his age the result is 40. How old is Tad?

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: Tad’s sister Tina asks him how old he is. Tad tells her that if she squares his age Nd subtracts 3 times his age the result is 40. How old is Tad?       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1164985: Tad’s sister Tina asks him how old he is. Tad tells her that if she squares his age Nd subtracts 3 times his age the result is 40. How old is Tad?
Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
.

    T%5E2 - 3T = 40

    T*(T-3) = 40


So, the number 40 is the product of two integer factors that differ by 3.


Quick guessing gives you the answer T = 8 :  Tad is 8 years old.


CHECK.  8^2 - 3*8 = 64 - 24 = 40.   ! Correct !

Solved.

For an 8-year boy, Tad demonstrates pretty good calculation skills (!)