Mathematics, 15.12.2020 14:00 sotocindy023
a man decides to give his son 1,000 L. L. for every math exercise is solved properly dias to encourage him to study mathematics, but takes back 500 L. L. if the solution is wrong. After 30 exercises, each has given and received the same amount. How many exercises Didi the son solve properly?
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a man decides to give his son 1,000 L. L. for every math exercise is solved properly dias to encoura...
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