the sum of three numbers is 84 the ratio of the first to second is three by four the ratio of the second to third is 4/5.find the second number
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let the numbers be 3x,4x and 5x ,therefore 3x+4x+5x=84.
12x=84
x=7
second number =4x
=4×7
=28
12x=84
x=7
second number =4x
=4×7
=28
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