Tena is five years older than her sister Tammy. The product of their ages is 234. How old is Tammy?

Question

anonymous · Answer

a..12 b. 10 c. 13 d. 24

anonymous · Answer

Tammy's age is $x$, and Tena's age is $x+5$.
We know that $x\cdot(x+5)  = 234$.

anonymous · Answer

This will simplify to: $$
x^2+5x-234 = 0
$$You can solve this like any other quadratic equation.

anonymous · Answer

Still figuring it out. i almost got it.

anonymous · Answer

Is Tammy 13? Because I took 13 * 18 and that equaled 234.

anonymous · Answer

If that worked, then yes.

anonymous · Answer

Did you guess, or did you solve it with algebra?

anonymous · Answer

I solved it by taking the four answers I had and added the 5 years to each and then just multiplied them.

anonymous · Answer

Thank u for your help