If the annual rate of simple interest increases from 11% to 17(1)/(2)%, then the annual income of a person will be 1...

If the annual rate of simple interest increases from 11% to 17 1/2 % , a person’s yearly income increases by 1,071.20. The principal amount invested (in Rs) is : यदि साधारण ब्याज की वार्षिक दर 11% से बढ़कर 17 1/2 % हो जाती है, तो एक व्यक्ति की वार्षिक आय 1,071.20 तक बढ़ जाती है। निवेश की गई मूल राशि (रु में) है ?

If the annual rate of simple interest increases from 10% to 12(1)/(2)%, a mans yearly income increases by Rs 1250. His principal (in Rs) is (a) Rs 45,000 (b) Rs 50,000 (c) Rs 60,000 (d) Rs 65,000

When the rate of interest being increased from 10% to 12(1)/(2)%, the yearly income of a person increases by Rs.1,250. The principal amount was

The annual income of a person decreases by Rs. 64 if the annual rate of interest decreases from 4% to 3.75%. What is his original annual income ?