You invested $1,600 in a business and your share of the net profit for year 1 was $100. What was your return on investment for the first year expressed as a fraction, decimal and as a %?

If your $100 net profit increased 5% in year 2, what is year 2 net profit in dollars?

If your return on investment was 5 percentage points greater in year 2, how much is it in dollars?