A festival car park attendant records the number of vehicles parked on Friday and on Saturday, shown in the table. Day Vehicles Friday 240 Saturday 300 Work...
Question 1 Report
A festival car park attendant records the number of vehicles parked on Friday and on Saturday, shown in the table.
| Day | Vehicles |
|---|---|
| Friday | 240 |
| Saturday | 300 |
Work out the percentage increase in the number of vehicles from Friday to Saturday. (2)
Answer Details
A percentage increase compares the change in the number of vehicles to the original (Friday's) number: the increase is \(300-240=60\) vehicles, so the percentage increase is \(\dfrac{60}{240}\times100\). [1 mark]
This gives \(25\%\). [1 mark]
Dividing the increase by Friday's total, not Saturday's, is essential; a percentage change is always calculated relative to the starting value, here the smaller number of vehicles.
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