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Question

From the given ratio table, select the number that is incorrectly entered.

3 6 9 15
4 9 12 20

A
12
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B
9
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C
20
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D
12
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Solution

The correct option is B 9
The given ratio table is,
3 6 9 15
4 9 12 20

The first ratio is 3:4.

The next ratio should be equivalent to 3:4.

3×24×2=68

The ratio given in column 2 is 6:9.

Hence, the number incorrectly entered is 9.

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