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RRB ALP CBT I 25 Nov 2024 Shift 2 Paper

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Question : 74 of 75

Marks: +1, -0

If 18 : 24 :: 24 : y, what is the value of y?

36
18
24
32

Solution:

Concept:

A proportion states that two ratios are equal.

Explanation:

Given

18 : 24 :: 24 : y

, write the ratios as fractions.

\frac{18}{24} = \frac{24}{y}

Simplify the left fraction:

\frac{18}{24} = \frac{3}{4}

So,

\frac{3}{4} = \frac{24}{y}

Cross multiply:

3y = 24 \times 4

3y = 96

y = \frac{96}{3} = 32

Answer:

y = 32

, which is option D.

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