You are choosing between two goods, X and Y, and your marginal utility from each is as shown below. If your income is $9 and the prices of X and Y are $2 and $1, respectively.
Total utility = 48 (= 10 + 8 for X plus 8 + 7 + 6 + 5 + 4 for Y).
What needs to be done to make the utility more than 48 ?