When ringing up a customer, a cashier needs 19 seconds to process payment as well as 1 second to scan each item being purchased. If it takes 26 seconds to ring up a customer, how many items are being purchased?

7 items

Step-by-step explanation: Since 19 seconds alone are being used to ring up a customer, you do 26-19, which equals 7. If it takes 1 second to ring up each item, it would be 7 seconds. Hope this helped!

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m