answer the following

a) A student has collected the following data describing the prices and quantities of harvested crops for the years 1990, 2000 and 2004 (Price in ksh and Production in kgs). Item 1990 2000 2004 Price Production Price Production Price Production Maize 200 1050 500 1300 600 1450 Wheat 250 940 550 1220 700 1450 Groundnuts 350 400 800 500 1000 480 Construct the Fisher's price Index in 2000 and 2004, using 1990 as the base period. Give your comments on the results