【Question 5】
To the left and right of Xiaoming's house, there is a supermarket each having a promotion on the same brand of yogurt. If Xiaoming goes to the supermarket on the left to buy, the money he brings is just enough to buy 12 boxes; if he goes to the supermarket on the right to buy, the money he brings is just enough to buy 2 more boxes. It is known that the price per box of yogurt at the right supermarket is 1 yuan cheaper than that at the left supermarket. How much money did Xiaoming bring in total? $\qquad$ yuan.