Question

On subtracting 15 from 5 times of a number, the result is twice the number. The number is .

• A. 5
• B. 15
• C. 12

Answer 1

The correct option is A 5

Let the number be $x$.
Forming an equation according to the given conditions, we get
$5x-15=2x$
$5x-2x=15$
$3x=15$
$x=\frac{15}{3}$
$x=5$
Therefore, the number is 5.