SOLUTION: if you invest \$5,000 for a year and earn \$400 invest,what is the annual interest rate ?( use the formula i=prt.)

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 Question 107742: if you invest \$5,000 for a year and earn \$400 invest,what is the annual interest rate ?( use the formula i=prt.)Found 2 solutions by checkley71, stanbon:Answer by checkley71(8403)   (Show Source): You can put this solution on YOUR website!I=PRT 400=5,000*R*1 400=5,000R R=400/5,000 R=.08 OR 8% IS THE RATE OF INTEREST. Answer by stanbon(57967)   (Show Source): You can put this solution on YOUR website!if you invest \$5,000 for a year and earn \$400 invest,what is the annual interest rate ?( use the formula i=prt.) ---------- i=prt 400 = 5000*r*1 r = 400/5000 r = 0.08 r = 8% ============ Cheers, Stan H.