Sohan invested Rs. P in Scheme X at 20% per annum under simple interest for 3 years and Rs. Q in Scheme Y at 12% per annum under compound interest for 2 years. If the interest obtained from Scheme X (using compound interest) and Scheme Y (using simple interest) is Rs. 8240 more than when calculated the other way around, find Sohan’s total investment, given that the investment in Scheme X is 40% more than that in Scheme Y.