Answer:
Let the number be x. According to question, \[8\left( x-\frac{5}{2} \right)=3x\] or, \[8x-20=3x\] or, \[8x-3x=20\] [Transposing 3x to LHS and 20 to RHS] or, 5x = 20 [Dividing both sides by 5] or, \[x=\frac{20}{5}~~~~~~~~~~~~~\] or, x = 4 Hence, the required number is 4.
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