Akshay deposited a certain sum in 3 different fixed deposit s i.e x, y and z at a rate of 12%, 16% and 8% per annum respectively for 5 years, 7.5 years and 10 years respectively. if at the end of the time period he received the amount from all the investment in the ratio 5 : 9 :3 then find the ratio between the money invested in X, Y And Z