MR A HAS BEEN INVESTING FOR 5 YEARS ANNUALLY RS .24000 IN EQUITY MUTUAL FUND TO CREATE A CORPUS FOR WORLD TOUR . EQUITY MUTUAL FUND DURING THIS SPAN GENERATED A RETURN OF 12% PER ANNUM.TO PROTECT THE ACCUMULATED INVESTMENT,HE REBALANCES THE PORTFOLIO IN 25:75 RATIO OF EQUITY AND DEBT TODAY AND CONTINUES INVESTING ANNUALLY IN THE REVISED RATIO FOR NEXT 5 YEARS . THE RETURN EXPECTED FROM EQUITY AND DEBT NOW SUBSIDES TO 9% PER ANNUM AND 7% PER ANNUM RESPECTIVELY. WHAT WOULD BE THE EFFECTIVE RATE OF RETURN REALISED BY HIM ON HIS TOTAL INVESTMENTS AT MATURITY OF THE PLAN