Bicycle to Car Ratio After Increases

Very Hard Problem Solving And Data Analysis Ratios And Proportions

In a small town, the ratio of bicycles to cars is 7:5. The town has seen an increase in both bicycles and cars over the past year. This year, the number of bicycles is increased by 15% and the number of cars is increased by 20%.

After these increases, what is the new ratio of bicycles to cars in its simplest form?