Zander’s Digital World rents out DVD’s. The manager observed that the weekly total number of rentals (n) varies directly with the total inventory (i), and varies inversely with the cost of each rental (c). Last week’s total rental is 300 DVD’s when its inventory was 960 and the cost per rental was ₱ 25. If its inventory does not change, what would be the effect on the weekly total number of rentals if the cost per rental will be increased to ₱ 30? Will it be beneficial to the store?