Uthu had some $10 notes and some $2 notes in the ratio of 7:3. He exchanged 6 of his $10 notes into $2 notes. In the end he had the same number of $10 notes and $2 notes. How much money did he have at first?
1 Answer
Jul 28, 2018
Uthu had
Explanation:
Let Uthu has
their value is
If
and their number becomes
and then
or
So Uthu had