Question

Find the number, when 15 is subtracted from 7 times the number, the result is 10 more than twice the number:

• A. 5
• B. 15
• C. 7.5
• D. 4

Hint:

To solve word problems, define variables, translate the problem into an equation, and solve step by step.

Answer 1

The Correct Option is A

Let the number be \( x \). According to the problem: \[ 7x - 15 = 2x + 10 \] Solving for \( x \): \[ 7x - 2x = 10 + 15 \] \[ 5x = 25 \] \[ x = \frac{25}{5} = 5 \]
Thus, the correct answer is 5.