Azhar deposited an amount of Rs. 'x + 250' in a simple interest scheme at a rate of 20% per annum for a duration of 3 years. Additionally, he invested Rs. 'x + 500' at a rate of 30% per annum, again under a simple interest scheme, for a period of 2 years. If the combined interest from both investments totaled Rs. 1950, determine the value of 'x'.