6.45%x+(400000-x)*5.60%=24950

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6.45%x+(400000-x)*5.60%=24950
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6.45%x+(400000-x)*5.60%=24950
6.45%x+(400000-x)*5.60%=24950

6.45%x+(400000-x)*5.60%=24950
6.45%x+(400000-x)*5.60%=24950
0.0645x+(400000-x)*0.056=24950
0.0645x+400000*0.056-0.056x=24950
0.0085x+400*56=24950
0.0085x=24950-22400
0.0085x=2550
85x=25500000
x=25500000/85
x=25500000/85
x=300000