Question:
The first digit of a sixdigit number is 1. This digit 1 is now moved from the first digit position to the end, so it becomes the last digit. The new sixdigit numbers is now 3 times larger than the original number. What are the last three digits of the original number?
I attached the book's answer solutions to the post.
I understand the 2nd answer alternative.
But for the first answer alternative, I got confused when they multiplied the left side by 10 and the right side by 10^5
The first digit of a sixdigit number is 1. This digit 1 is now moved from the first digit position to the end, so it becomes the last digit. The new sixdigit numbers is now 3 times larger than the original number. What are the last three digits of the original number?
I attached the book's answer solutions to the post.
I understand the 2nd answer alternative.
But for the first answer alternative, I got confused when they multiplied the left side by 10 and the right side by 10^5
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