Question

I thought of a number. My number doubled is 20 bigger than 200. Find my number.

Answer 1

Let the number which is thought be denoted by the variable x.

It is given that 2(x) is 20 more than 200.

So, our equation is 2x = 200 + 20.

Solution to the equation:

2x = 200 + 20.

2x = 220.

$x = \frac{220}{2} \\ \\ x = 110$

Therefore, the number thought is 110.