You can put this solution on YOUR website! four fifths of a number x when added to two fifths of the same no. x gives result 100. Find x?
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(4/5)x + (2/5)x = 100
6/5 x = 100
x = (5/6)100
x = 500/6 = 83 1/3
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Cheers,
Stan H.
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