Question

Please answer my question.Its an algebra riddle Iam a number Tell my identity! Take me seven times over And add a fifty! To reach a triple century You still need forty!

Answer 1

The number is 30.

Explanation:

The number is x.

"Take me seven times over" 7x

"And add a fifty" 7x + 50

"To reach a triple century You still need forty!" 7x + 50 + 40 = 300

7x + 90 = 300

7x = 210

x = 30