Question

Table - Weekly Fuel Usage (litres)

Vehicle	Mo	Tue	Wed	Thu	Fri
Truck 1	18	20	22	21	19
Truck 2	25	24	26	23	24

What is the overall average daily fuel usage for both trucks?

• A. 22.2 litres
• B. 22 litres
• C. 20.2 litres
• D. 20 litres

Answer 1

Answer:

A. 22.2 litres

From the screenshot, the table is:

Vehicle	Mon	Tue	Wed	Thu	Fri
Truck 1	18	20	22	21	19
Truck 2	25	24	26	23	24

To find the overall average daily fuel usage for both trucks:

1. Total fuel used by Truck 1:
   18+20+22+21+19=100
   

2. Total fuel used by Truck 2:
   25+24+26+23+24=122
   

3. Combined total:
   100+122=222
   

4. Total number of daily observations:
   $2 \text{ trucks} \times 5 \text{ days} = 10$
   

5. Overall average:
   $\frac{222}{10}=22.2 \text{ litres}$