Question

solve the following riddle
I am a number
tell my identity
take me seven times over
and add a fifty
to reach a triple century
you still need forty
The question is from chapter *Equation*
no unnessecary answers or else I will report that particular answer
its urgent . ​

Answer 1

Answer:

Let the number be n.

According to the question, 7n+50+40=300

⇒7n+90=300⇒7n=300−90

⇒7n=210⇒n=

7

210

⇒n=30

Thus, the required number is 30