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Mathematics, 23.11.2021 15:30 imamnaab5710

There were 100 coins in a box. The ratio of coins to notes was 4 : 7.
After 25 coins were removed and some notes were added to the box,
the ratio of coins to notes became 1 : 3.
How many notes were added to the box?

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There were 100 coins in a box. The ratio of coins to notes was 4 : 7.
After 25 coins were re...
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