X + y = 16 (1) x/y = 3 (2) ------- x + y = 16 x = 16 - y 1. Substitute x into equation 2 16-y/y = 3 16 - y = 3y 16 = 4y y = 4 2. Now substitute y into equation 1 x/y = 3 x/4 = 2 x = 12 Therefore, x = 12, y = 4
The number of monthly payments Brenda will have will be given by: Number of payments=[Number of years]×[number of months] Number of years=5 Number of months=12 hence # Payments=5*12=60 monthly payments
