Question : Excel and adding percentages function

MS Excel 2007 Professional.

I have a few different columns on the spreadsheet.  One column (C), which will show a total price.  Next column (D), which will show the amount in column C but with an additional percentage.  My question is, how can I setup Column D to read 'If Column C amount is between $1000.00 and $1400.00, then add 10% to the amount and display that total in Column D.  If Column C amount is between $1500.00 and $1900.00, then add 15% to the amount and display that total in Column D.  If Column C amount is greater than $2000.00, then add 20% to the amount and display the total in Column D' ?

Answer : Excel and adding percentages function

I'm sorry, I completely messed up.

=IF(AND(1000<=C1,C1<1500),C1*1.1,IF(AND(1500<=C1,C1<2000),C1*1.15,IF(C1>=2000,C1*1.2,IF(C1<1000,C1,"Out of range"))))


This should do it, test1<b<test2 does not work in Excel