The difference between the simple and compound interest of sum Rs. 1920 at x% rate of interest for 2 years is Rs. ______ and Rs. ________ invest at a rate of simple interest of [x/2]% for 2 years is 3000. Find which of the following is true?
1
180, 9000
2
360, 15000
3
120, 12000
4
240, 10000
5
More than one option true