The ratio of present age of Radha and Saloni is 2 : 3 . After 7 years from now , the ratio of their ages will be 3 : 4 . If Radha is 7 years youngers than Saloni . Find age of Radha ( in years )?
Answer & explanation
Correct answer: option 2
ratio of → Radha : Saloni
2 : 3
Let the present age Radha = 2x & present age of Saloni = 3x
After 7 years ,
According to question ,
ratio of → Radha : Saloni
3 : 4
\(\frac{2x\;+\;7}{3x\;+\;7}\) = \(\frac{3}{4}\)
8x + 28 = 9x + 21
x = 7
present age Saloni = 3x
age of Saloni = 3 × 7 = 21
Radha is 7 years younger than Saloni .
Then, age of Radha = 21 - 7 = 14