There were one yen and five yen coins in total 55 pieces.
They were exchanged into ten yen coins so that the number of coins might decrease as many as possible.
The number of coins became 15 pieces and the number of one yen coins was 2.
The one yen coin which suited first should ask for number of sheets.
Find the number of pieces of one yen coin at first.
They were exchanged into ten yen coins so that the number of coins might decrease as many as possible.
The number of coins became 15 pieces and the number of one yen coins was 2.
The one yen coin which suited first should ask for number of sheets.
Find the number of pieces of one yen coin at first.
37 pieces
