# The ratio of Neha's age to that of Jane is 4:7 and the ratio of Jane's age to that of Smita is 4:3. If Smita is 21 years old, how old is Neha?

Ratio of Neha's age to that of Jane is 4:7. This means;

So, Neha's age = $\frac{4}{7}×$ Jane's age.........(i)
Now, Ratio of Jane's age to that of Smita is 4:3. This means;

So, Jane's age = $\frac{4}{3}×$ Smita's age = years
Putting Jane's age in (i) we get;
Neha's age = years
Therefore Neha is 16 years old.

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