A portfolio invests in equity and bonds. Contribution data is given for 4 consecutive weeks as follows:

Day 1 Equity = 5% Bonds = 2% Portfolio = 7%

Day 2 Equity = 3% Bonds = 1% Portfolio = 4%

Day 3 Equity = -6% Bonds = 2% Portfolio = -4%

Day 4 Equity = 2% Bonds = 2% Portfolio = 4%

Calculate contribution of equity and bonds and show that your contributions explain the total portfolio performance of 11,1020%.