Explanation:

Let’s analyze each given statement based on the provided information:

- Only Bike users = 34 (given directly).

- Users of all three vehicles = 2.5% of 240 = 6.

- Users of Car and Truck (but not Bike) = 36 more than only Bike = 34 + 36 = 70.

- Users of Car and Bike = Users of Truck and Bike (but not all three), call this value x.

- Users of Car and Bike = half of only Bike = 34/2 = 17; so x = 17.

- Only Truck = 10 less than only Bike = 34 - 10 = 24.

Sum up all unique sets:

- Only Bike: 34

- Only Truck: 24

- Only Car: Let’s call this y (to be found)

- Only Car and Bike: 17

- Only Truck and Car (not Bike): 70

- Only Truck and Bike: 17

- All three: 6

So, total users = 34 + 24 + y + 17 + 70 + 17 + 6 = 168 + y

Set equal to 240: 168 + y = 240 ? y = 72 (only Car).

Required Calculation:

- Average of only Bike and only Truck = (34 + 24)/2 = 29

- Average of only Bike and users of all three vehicles = (34 + 6)/2 = 20

- Difference between averages = 29 - 20 = 9

# Checking options:

- Option 1: 2

- Option 2: 4

- Option 3: 8

- Option 4: 6

- Correct difference found is 9, which is "None of these".

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- Each statement checked and values detailed above.

- Final answer: 9, not listed among the options.

- So, option:5 ("None of these") is correct.

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Correct Answer: Option:5 - None of these.