99. John decided to move to Santa Rosa and take the job at Mi Ultimo Refugio (see Exercise 98). He was able to increase his income because he could work 4 Sundays a month at time-and-a half. So now he worked 32 hours a month at time-and-a-half and 136 hours at the regular rate of $10.30 (all after taxes were removed). Note: He previously had worked 168 hours per month at $10.30 per hour. a) What was his new monthly income? b) How much did his monthly income increase?​