Tom invested 13,000.00 for one year, part at 9 percent annual interest and the rest at 7 percent annual interest. How much must he invest at 9 percent to get $1000.00 in interest in a year?

• 4500
  If amount invested at 9%=x and at 7%= 13000-x, then
  Interest= x*(9/100) + (13000-x)*(7/100) =1000
  x=4500
• 9 years agoHelpfull: Yes(0) No(0)