May I please have some help with the problem in the attached screenshot?

Given the following utility function: U = 100X0'10Y0'50 and marginal rate of substitution: MRS - - m 0.50X A consumer facing the following prices: P)( = $10, Py =$1 chooses to consume: 11 units of good X and 7 units of good Y. Given this consumption bundle, the marginal rate of substitution is equal to - D (Round your answer to two decimal places. Note that the minus sign is already included). Given this value, the consumer should consume V in order to maximize his/her utility