The provided line graph displays the market share percentages for Company X and Company Y in the smartphone industry from 2018 to 2022. If the total smartphone market value was $450 billion in 2020, and Company X's market share was 25% while Company Y's was 15%, what was the approximate difference in revenue between Company X and Company Y in 2020?
✓ Correct Answer: Option C
Company X's revenue: 25% of $450 billion = $112.5 billion. Company Y's revenue: 15% of $450 billion = $67.5 billion. The difference is $112.5 - $67.5 = $45 billion.