Dennis thought of a number.

Question

Dennis thought of a number.He adds 0.5 to that number and then multiplies the new result by 4 he then subtracts 2 and divides the number 2.His final answer is?

Answer 1

Let x be the number.

 

Add 0.5:   x+0.5

 

Multiply by 4:  4(x+0.5) = 4x+2

 

Subtract 2:  (4x+2) - 2 = 4x

 

Divide by 2:  4x/2 = 2x

 

The end result is 2 times the original number.