urgently needed please

Task 1 (3.5 points). On 1 January 2007, Albert invested (1,000 at 6 per cent interest per year for three years. The CPI on 1 January 2007, stood at 100. On 1 H January 2008, the CPI stood at 100. On I January 2009, it was 110 and on 1 January 2010, the day Albert's investment matured, the CPI was 118. Find the real rate of interest earned by Albert in each of the three years and his total real return over the three-year period. Assume that interest earnings are reinvested each year