Question

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Correct option is

Let the ones digit $=x$.

Tens digit $=x−3$

The no. $=10(x−3)+x=11x−30$

The reversed no. $=10x+x−3=11x−3$

$7(11x−30)=4(11x−3)77x−44x=210−1233x=198x=6$

Tens digit $=6−3=3$

Therefore, the number is $36$.

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