Rajan fruit seller minimum profit

Rajan is a fruit seller. On any day, he sells only one kind of fruit. On the first day, he buys $9\text{ kg}$ of blueberries. On the second day, he buys $22\text{ kg}$ of kiwis. On the third day, he buys $50\text{ kg}$ of peaches. The per kg purchase price of each fruit is an integer. Further, on each of these three days, he spends the same amount to purchase fruits. On the fourth day, he buys mangoes at $\text{Rs. } 35/\text{kg}$ and spends $\text{Rs. } 15$ less than any of the previous three days.

If he then sells all the mangoes at $\text{Rs. } 50/\text{kg}$, what is his MINIMUM possible profit on the fourth day?