How would I do this question

The contingency table below shows the results of a survey of video viewing habits by age. Video Viewing Platform Preferred Viewer Age Mobile/Laptop Device TV Screen Row Total 18-34 37 25 62 35-54 11 11 22 55+ 6 10 16 Column Total 54 46 100 Find the following probabilities or percentages: (a) Probability that a viewer is aged 18-34. (Round your answer to 2 decimal places.) Probability (b) Probability that a viewer prefers watching videos on a TV screen. (Round your answer to 2 decimal places.) Probability (c) Percentage of viewers who are 18-34 and prefer videos on a mobile or laptop device. Percentage of viewers 1% (d) Percentage of viewers given they are 18-34 who prefer videos on a mobile or laptop device. (Round your answer to 2 decimal places.) Percentage of viewers 1% (e) Percentage of viewers who are 35-54 or prefer videos on a mobile or laptop device. Percentage of viewers %