Find the two-digit number!

This arithmetic/algebraic problem is tricky but fun and involves a nice bit of critical thinking! When you solve it, make sure to take a strategic approach whether you use algebra or not. Try it on your own, but stay tuned for Huzefa's explanation. Check back every Friday for more awesome math puzzles!
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[@akshpatel2470]

Thanks for making it easy, also you SAT vids help. I have been scoring consistent 770's-800's on Khan Academy math portion SAT test