1640.31 – Ballpoint Pen Sale

Tags:Problem Set 12Algebra IAlgebra Prep

The Ticky-Tacky ball point pens weren’t selling at 50 cents each at the House Mouse store. So Chuck reduced the price. The pens sold out very quickly for a total sale of $31.93. What was the sale price of a pen?


The key to solving this problem is that a whole number of ballpoint pens were sold. To solve the problem, just try prices until you find one that yields a whole number when divided into $ $$31.93.You only need to try numbers less than 50 cents. It won’t take you to long to discover that

31.93.31=103. \frac{31.93}{.31} = 103.

Thus the number of ballpoint pens sold was 103, and the sale price was 31¢.