Here is an ordered stem and leaf diagram showing the ages of a company's employees.
| Stem | Leaf |
|---|---|
| 1 | 6 8 |
| 2 | 1 3 4 6 7 8 9 |
| 3 | 1 4 5 8 9 |
| 4 | 2 7 |
| 5 | 1 4 6 8 9 |
Key: 1∣6=161|6 = 161∣6=16 years old
Write down all the ages of the company's employees.
One of the employees is selected at random. The probability that they are younger than 30 is 37\displaystyle \frac{3}{7}73. Find the number of employees who are younger than 30.
116 exam-style questions on OCR GCSE Maths Stem and Leaf. Each one has a worked solution and a mark scheme showing where the marks go.