the age of riya and her sister in the ratio 5:7 . four years later the sum of their ages will be 56 year .what are their present ages
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let the age of Riya is 5x and her sister is 7x then according to question after 4 years
5x+4 + 7 x + 4 = 56
12 x + 8 = 56
12x = 56-8
x = 48/12
x = 4
so the age of Riya is 20 and her sister is 28 years
5x+4 + 7 x + 4 = 56
12 x + 8 = 56
12x = 56-8
x = 48/12
x = 4
so the age of Riya is 20 and her sister is 28 years
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