Mathematics, 05.06.2020 10:58, Graciesett6879

Mary has 21 coins whose total value is shs 72. There are twice as many five shillings coins as there are ten shillings coins. The rest are one shilling coins. Find the number of
ten shillings coins that Mary has.

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Mary has 21 coins whose total value is shs 72. There are twice as many five shillings coins as ther...