When ringing up a customer, a cashier needs 7 seconds to process payment as well as 1.5 seconds to scan each item being purchased. If it takes 28 second s to ring up a customer ,how many items are being purchased?

14 items

Step-by-step explanation:

What we know:

- it takes 7 seconds to process the payment

- for every item, it takes 1.5 seconds to scan

- in total, it took 28 seconds to ring up the customer

With these pieces of information, we can construct the following equation:

when is equal to the number of items there is

Subtract both sides by 7

Divide both sides by 1.5

Therefore, 14 items were being purchased.

I hope this helps!

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