An owner of a shoes store wants to fill his shop with men's

An owner of a shoes store wants to fill his shop with men's shoes at least 100 pairs and women's shoes at least 150 pairs. That stores can accommodate 400 pair of shoes. Profit of each pair of men's shoes is Rp1000,00 and women's shoes is Rp500.00. If the number of men's shoes should not be more than 150 pairs, the biggest advantage gained is ....