The present age of 3 persons in proportions 4:7:9. Eight years ago, the sum of their ages was 56. Find the present age
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let the ages be=x
4x:7x:9x
4x+7x+9x=20x
20x=56
x=14/5
4x=4×14/5=56/5
7x=98/5
9x=126/5
4x:7x:9x
4x+7x+9x=20x
20x=56
x=14/5
4x=4×14/5=56/5
7x=98/5
9x=126/5
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