The average height of June, Ali and Linda is $$160\text{cm}$$. Ali is $$166 \text{cm}$$ tall. June and Linda are as tall as each other. What is Linda\textquotesingle s height? 
Overseas Competition->Knowledge Point->Counting Modules->Statistics and Probability
The total height is $160\times 3 = 480\text{cm}$ and hence the height of both June and Linda is $480-166=314\text{cm}$.  Therefore the height of Linda is $314 \div 2 = 157\text{cm}$. 