Question

Natasha was thinking of a number. Natasha adds 11 to it, then doubles it and gets an answer of 78.2. What was the original number?

Answer 1

Answer:

Natasha's number is 28.1

Step-by-step explanation:

Let her original number be x

So, she adds 11 to x:

x + 11

She multiplies (x+11) by 2:

2 * (x+11)

2 * (x+11) is equal to 78.2, so solve the equation:

2 * (x+11) = 78.2

2x + 22 = 78.2

2x = 78.2-22

2x = 56.2

x = 28.1