A petrol pump delivers 15 L in 45 seconds. What is the flow rate in liters per second?

To determine the flow rate in liters per second, you need to divide the total volume delivered by the total time taken for that delivery. In this case, the petrol pump delivers 15 liters in 45 seconds.

First, you carry out the calculation:

Flow rate = Total volume / Total time

Flow rate = 15 liters / 45 seconds

When you divide 15 by 45, you get:

Flow rate = 15 ÷ 45 = 1/3 liters per second.

Calculating 1/3 gives approximately 0.33. Therefore, the flow rate is correctly identified as 0.33 liters per second. This value aligns with the correct option provided.

Understanding the flow rate is essential in scenarios where you need to know how efficiently fuel is dispensed, as it directly affects filling times and overall efficiency at a petrol station.