20 was added to twice a number and it was found that it gave the same answer as multiplying the number by 8 and subtracting 4 from the product, the number is :

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Solution

The correct option is C
4

Let the number be x.

Then, $2 x + 20 = 8 x - 4 \Leftrightarrow 6 x = 24 \Leftrightarrow x = 4.$

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20 was added to twice a number and it was found that it gave the same answer as multiplying the number by 8 and subtracting 4 from the product, the number is :

The correct option is C 4 Let the number be x. Then, 2x+20=8x−4⇔6x=24⇔x=4.

The correct option is C
4

Let the number be x.

Then, $2 x + 20 = 8 x - 4 \Leftrightarrow 6 x = 24 \Leftrightarrow x = 4.$