Question 213805
Let  x  =  amount  @ 4%,,,,and y= amount  @ 7%
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x + y = $ 25,000,,,,,or  y= 25,000 -x
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.04*x +.07*y = 1300
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.04(x) + .07(25,000-x) = 1300
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.04x -.07x + 1750 = 1300
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-.03x = -450
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x= $15,000
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y= 25,000- 15,000 = $ 10,000
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check,,,, .04*15000 +.07*10,000 = 600 + 700 = $ 1300,,,,ok
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