Henry Ernest Dudeney/Puzzles and Curious Problems/30 - Subscriptions

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Puzzles and Curious Problems by Henry Ernest Dudeney: $30$

Subscriptions
Seven men agreed to subscribe towards a certain fund,
and the first six gave $\pounds 10$ each.
The other man gave $\pounds 3$ more than the average of the seven.
What amount did the seventh man subscribe?


Click here for solution

Sources