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Question

If 12 : x : : 30 : 25, then the value of x is

A
3
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B
10
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C
5
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Solution

The correct option is B 10
12 : x : : 30 : 25
12x = 3025
By cross-multiplication, we get
12×25 = 30×x
2×2×3×5×5 = 3×2×5×x
x = 10

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