A new photocopier works 4 times as fast as an old one. When the machines work together, a university can produce all its staff m
1 answer:
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Answer:
The correct option is D) 43 items.
Step-by-step explanation:
As we know that total given time is ,
,
Out of which cashier spends 40 seconds to process the customer's payment.
So the remaining time = (126 - 40) = 86 secs.
And the remaining time is used to scan the item and so that we can calculate here the no items scan is = (86 ÷ 2) = 43.
Therefore we can say that 43 items are being purchased.
The graphs of the two equation are attache. The red curve represents the graph of the equation 
while the blue curve represents the graph of the equation 
.
