Hey there can someone help me on that question im stuck since 2 days ! Thanks !!

3. You have improved your marks this year and your parents are impressed and wish to reward you for your efforts. You have convinced them that your lifestyle (level of utility) should be 360,000 utils. Given your total utility function as TU = 20XY and the price of Y is $10 and the price of X is $50, what is the income you require to achieve a lifestyle of 360,000 utils. Show work. Optimal combination of Y and X: Y and X Required income to achieve 360,000 utils