Peter invests $100,000 in an account that pays 12% annual interest: the interest is paid once, at the end of the year. Martha invests $100,000 in an account that pays 12% annual interest, compounding monthly at the end of each month. At the end of one full year, compared to Peter's account, approximately how much more does Martha’s account have?  Pick one:  A) Zero  B) $68.25  C) $682.50  D) $6825.00  E) $68250.00
At the end of 1 year Peter gets an interest of - Rs 12000   At the end of 1 year Martha gets an interest of = 100000(1+0.12/12)^12=100000(1.01^12)= 112682.50 -100000= 
<gadget id="calculator">112682.50 -100000</gadget>
<output>12_682.5</output>
12682.50 $   Therefore Martha has   12682.50-12000= 
<gadget id="calculator">  12682.50-12000</gadget>
<output>682.5</output>
682.50 $ more than Peter at the end of 1 year.   Option ($682.50)
<result>C</result>
Peter invests $100,000 in an account that pays 12% annual interest: the interest is paid once, at the end of the year. Martha invests $100,000 in an account that pays 12% annual interest, compounding monthly at the end of each month. At the end of one full year, compared to Peter's account, approximately how much more does Martha’s account have?