Danielle and Gabrielle each opened a savings account with a deposit of $150. • Danielle earned 3.5% simple interest per year. • Gabrielle earned 4% simple interest per year. • Neither Danielle nor Gabrielle made additional deposits or withdrawals. How much more did Gabrielle receive in interest than Danielle after four years?

Answer 1

The difference was 0.5% per year, so 150*0.005*4