The product of a number and 5 is four times the sum of that number and 10. what is the number

Question

The product of a number and 5 is four times the sum of that number and 10. what is the number

Answer 1

Let x = the unknown number

• The product of a number and 5:  5x
• is =
• four times the sum of that number and 10:  4*(x+10)

 

5x = 4(x+10)

5x = 4x + 40

 

Solve for x.