In a certain jurisdiction, john who is earning $35,000 currently pays a flat percentage of 15% in income tax. the tax
authorities suggest a change to a progressive income tax system, where the rules for taxation are as follows:
1. charging 10% on a person's income up to $20,000
2. charging 30% on any income above that
how much more will john be paying in income tax under the proposed changes? give your answer in dollars to the nearest
dollar.