Mathematics, 23.09.2019 06:20, hardwick744

When ringing up a customer, a cashier needs 10 seconds to process payment as well as 2 second to scan each item being purchased. if it takes 42 seconds to ring up a customer, how many items are being purchased?

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When ringing up a customer, a cashier needs 10 seconds to process payment as well as 2 second to sca...