SOLUTION: A total of \$5,000 was invested, part of it at 5 % interest and the remainder at 7 %. If the total yearly interest amount is \$325 , how much was invested at 5 %?

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 Question 592081: A total of \$5,000 was invested, part of it at 5 % interest and the remainder at 7 %. If the total yearly interest amount is \$325 , how much was invested at 5 %? Answer by mananth(12270)   (Show Source): You can put this solution on YOUR website!Part I 5.00% per annum ---x part II 7.00% per annum ---y x+y=5000------------------------1 5.00% x + 7.00% y= 325 Multiply by 100 5x+7y=32500.00 --------2 Multiply (1) by -5 we get -5x-5y=-25000.00 Add this to (2) 2y=7500 divide by 2 y = 3750 Part I @ 7.00% Balance 1250 part II @ 5.00% CHECK 3750 --------- 7.00% ------- 262.50 1250 ------- 5.00% ------- 62.50 Total -------------- 325.00