Table shows the number of tourists visiting cities by different modes of travel.

City	Car	Train	Bus	Bike	Air
Delhi	19200	18800	17200	19100	17400
Mumbai	18000	16600	17800	18700	18200
Chandigarh	15600	19400	16300	18100	14800
Dehradun	13200	18500	14200	17000	14800
Manali	14900	15900	15500	14900	18300
Jaipur	16800	16400	15900	14200	17300

What is the difference between the average number of air travellers and the average number of bus travellers across all six cities?

A783

B683

C650 ✓ Correct

D625

Correct answer: (C) 650

Explanation

The difference is 650, so the answer is 650.

The air travellers are 17400, 18200, 14800, 14800, 18300 and 17300, totalling 100800.

So the average number of air travellers is 100800 divided by 6, which is 16800.

The bus travellers are 17200, 17800, 16300, 14200, 15500 and 15900, totalling 96900.

So the average number of bus travellers is 96900 divided by 6, which is 16150.

The difference is 16800 minus 16150.

That equals 650.

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