The sum of present ages of Ria and Abby is 48 years. Today Abby is 4 years older than Shweta. The respective ratio of the present ages of Ria and Shweta is 4 : 7. What was Abby’s age two years ago ?
Let Ria's present age = 4x years
Shweta's present age = 7x years
=> Abby's present age = (7x + 4) years
Acc to ques :
=> $$4x + 7x + 4 = 48$$
=> $$x = \frac{44}{11} = 4$$
$$\therefore$$ Abby's present age = 7*4 + 4 = 32 years
=> Abby's age 2 years ago = 32 - 2 = 30 years
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