Mathematics, 05.04.2021 14:40 xdpugx0

A sum of $ 990 is in the form of 30 bills, some for $ 20 and others for $ 50. What is the number of tickets of each kind?

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A sum of $ 990 is in the form of 30 bills, some for $ 20 and others for $ 50. What is the number of...

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