Question 5
Yuan bought mangoes and melons at the market. The price of a mango is $\frac37$ of the price of a melon. At first, Yuan used $\frac38$ of his money to buy 6 melons and 2 mangoes. The following week, he used the rest of his money to buy 2 melons and some mangoes. How many mangoes did Yuan buy in the second week?