The sales tax on a surfboard is $12. what is the percent of sales tax?

Political canvassers polled voters in two locations on whether they viewed a particular candidate for governor favorably. at the first location, they asked 125 people and of those, 22.4% responded favorably. at the second location, 37.5% of 272 people responded favorably. what percent of all the people surveyed responded favorably? a) 25.7% b) 30.0% c) 31.5% d) 32.7%