GCSE Maths Practice: bar-charts

\( \begin{array}{l}\text{A bar chart compares shoe sizes of students.} \\ \text{The bar for size 7 is twice as tall as size 6.} \\ \text{If 5 students have size 6, how many have size 7?}\end{array} \)

Choose one option:

\( 12 \) \( 8 \) \( 10 \)