If in a room 10 beds can be placed, then how many beds can be placed if the size of the room is halved?

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Solution

The correct option is B 5
Let the number of beds in half the size of the room be 'c'.

Writing the given statement in proportion, we have,
$10 : 1 :: c : \frac{1}{2}$

We know, product of means = product of extremes
$\Rightarrow 1 \times c = 10 \times \frac{1}{2}$
$\Rightarrow c = 5$

Number of beds that can be placed if the room is halved = 5

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If in a room 10 beds can be placed, then how many beds can be placed if the size of the room is halved?

The correct option is B 5Let the number of beds in half the size of the room be 'c'. Writing the given statement in proportion, we have, 10:1::c:12 We know, product of means = product of extremes ⇒1×c=10×12 ⇒c=5 Number of beds that can be placed if the room is halved = 5