solve the riddle:;I am anumber tell my identity .take me 7time over and add five .to reach the a century you still need twenty , five..
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Answer:
30
Step-by-step explanation:
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.
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