the ratio of the ages of two persons is 5:9 and the age of one of them is greater then the other by 40 years.the sum of their ages, in years, is
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6
Let their ages be 5x and 9x
And 5x+40=9x
So 5x-9x=-40
-4x=-40
x=10
So their ages are 50 and 90
And sum of their ages is 140 years
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0
5x + 9x = 40
14x =40
20/7 =140
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