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Quantitative Aptitude

Averages

There are twi...

Question

There are twice the number of two-wheelers as there are three-wheelers and the number of 4 wheelers are equal to the number of two-wheelers. The average number of wheel per vehicle is:

A

3

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B

4

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C

5

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D

none of these

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Solution

The correct option is A
3

$\begin{matrix} No of 2 wheelers & No. of 3 wheelers & No.of 4 wheelers N o . o f w h e e l s & 2 x & x & 2 x 2 \times 2 x = 4 x & 3 \times x = 3 x & 2 x \times 4 = 8 x \end{matrix}$
Therefore average number of wheels $= \frac{4 x + 3 x + 8 x}{5 x} = 3$

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