The pictogram shows information about the number of ice creams sold by a van on Friday's, Saturday's, and Sunday's shifts.
| Shift Day | Pictogram |
|---|---|
| Friday | 3 full squares |
| Saturday | 3 full squares |
| Sunday | 3 full squares and 1 small square |
| Monday |
Key: 1 full square represents 20 ice creams.
Write down the number of ice creams sold on Sunday.
50 ice creams were sold in Monday's shift. Show this information on the pictogram.
What was the total number of ice creams sold across these four shifts?
