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Question

If 97 and a63 are equivalent fractions, then the value of a is ___ .


A

18

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B

81

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C

30

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D

60

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Solution

The correct option is B

81


97=a63 are equivalent fractions.

Equivalent fractions are obtained when you divide or multiply both numerator and denominator with the same number.

Here in the denominator, 7 ×9=63

So, 9 (numerator) has to be multiplied by 9 to get a.

Hence, a=9×9=81

Therefore, 9×97×9=8163.


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