If A = 2.5, B = 4.5, C = 1.25, then value of 7A + 5B + 3C is ____ .
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Step-by-step explanation:
7a= 5b=2cA:b=5:7B:c=2:5A:b =5:7 B:c= 2:5___________A:b: c=5:7:5(7/2) =10:14:35
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7A=5B=2C............♪
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