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Q.

A certain number of horses and an equal number of men are going somewhere. Half of the owners are on their horses back while the remaining ones are walking along leading their horses. If the number of legs walking on the ground is 70. How many horses are there?

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a

16

b

12

c

10

d

14

answer is C.

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Detailed Solution

Let the number of horses is 2x.

So, number of men = 2x

According to question,

$\begin{array}{l} \Rightarrow 2 x \times 4 + x \times 2 = 70 \\ \Rightarrow 8 x + 2 x = 70 \\ \Rightarrow 10 x = 70 \\ \Rightarrow x = 7 \end{array}$

Hence, number of horses $= 2 x 7 = 14$ .

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A certain number of horses and an equal number of men are going somewhere. Half of the owners are on their horses back while the remaining ones are walking along leading their horses. If the number of legs walking on the ground is 70. How many horses are there?