Question

Solve the following riddle:
I am a Number,
Tell my identity!
Take me four times over
And add a forty five!
To reach a double century
You will still need fifty!​

Answer 1

Take me four times over and add a forty five = 4x + 45

To reach a double century you still need fifty = 200 -50 = 150

So,

4x + 45 = 150

4x = 150-45

4x = 105

x =26.5

So, with the given values, x = 26.5