Question

i am a number, tell my identify! Take me seven times over And aad a fifty! to reach a triple century. You still need forty!

Answer 1

The number is 30

30x7=210
210+50= 260
300-260= 40

So the identity of the number is 30

Answer 2

Heyya !

Let the no: be "x"

A.T.Q ,

7x + 50 + 40 = 300

7x + 90 = 300

7x = 300 - 90

7x = 210

x = 210/7
   = 30

The no: is 30