Lara is younger than John by 7 years. If their ages are in the respective ratio of 7 : 9, how old is Lara?

16 years

18 years

28 years

24.5 years

Let John's age be x years. Then, Lara's age = (x - 7) years. (x - 7)/x = 7/9 9x - 63 = 7x 2x = 63 x = 31.5 Hence, Lara's age =(x - 7) = 24.5 years.

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