Question

I am a number Tell my identity take me 12 times over and add a 50 to reach a double century you still need 30 who am I​

Answer 1

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.