two number are in the ratio 2.7 if the sum of the number is 81 .then the number are 900 and 540 180 and 630 270 and 720 no of these
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none of these...
correct answer is given above
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2xand7x
sum of the number is 81
2x+7x=81
9x=81
x=9
one number=2×9=18
another number=7×9=63
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