Seven years from now, Anamika will be as old as Malini was 4 years...

Let the present age of Anamika be $A$, Malini be $M$ and that of Srinidhi be $S$. The, according to the question: 1) Seven years from now, Anamika will be as old as Malini was 4 years ago. ($$\begin{aligned} & A+7=M-4 \\ & \Rightarrow M=A+11 \\ & S=2 \text { years } \end{aligned}$$$) And, 2) Srinidhi was born 2 years ago. The average age of Anamika, Malini and Srinidhi 10 years from now will be 33 years. ($$\begin{aligned} & \frac{(A+10+M+10+S+10)}{3}=33 \\ & A+M+S+30=33 \times 3 \\ & A+M+S=99-30 \\ & A+M+S=69 \end{aligned}$$) Now, by substituting the above values, ($$\begin{aligned} & A+(A+11)+2=69 \\ & 2 A+13=69 \\ & A=56 \div 2 \end{aligned}$$) \$(\mathrm{A}=$28 $\text { years }$) Hence, the present age of Anamika is $28$ years is the correct answer.