Deanna and her sister Molly borrowed $1,600 from their mother. Their mother only charged 3% ordinary simple interest and the loan was for two years. Compute the total interest and principal that the sisters need to repay their mother. (Use a 360-day year.)

Ordinary Simple Interest

Interest calculated on the principal amount of a loan or investment without compounding, based on a 365-day year.

360-Day Year

A simplified accounting method where the year is considered to have 360 days for the calculation of interest and other financial metrics.

Two Years

A period of time equal to 24 months or 730 days, typically used as a measure for planning or agreements.