Question 3 (35 points) Kinko spends all his money on whips and leather jackets. Kinko's utility func- tion is U(x, y) = min{4x, 2x + y}, where r is his consumption of whips and y is his consumption of leather jackets. Kinko is consuming 15 whips and 10 leather jackets. The price of whips is $10. Find Kinko's income