Sampling and estimation — practice question

It was discovered that $68\%$ of the passengers on a train used a cell phone during the journey. Among those who used a cell phone, $70\%$ were younger than $30$ years, $25\%$ were aged between $30$ and $65$ years and the remainder were over $65$ years old. Among the passengers who did not use a cell phone, $26\%$ were under $30$ years old and $64\%$ were over $65$ years old, while the rest were between $30$ and $65$ years old.