The spending percentage guidelines are the ideal percentage a person can spend when he or she receive his or her salary or income. Note that this is not the actual salary spent in a person. It is merely a suggestion on how to spend the salary or income. The maximum percentage of net spendable income that should be set aside for transportation is up to 15%. The answer is letter A. the rest of the percentage does not match any of the supposed to be expenses. Up to 32% of the income, it is spent for housing. And up to 11% of the income is spent for food.