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3 years ago

10

One of Gemma's 5 friends is going to upgrade to a newer device soon. The average cost of their devices will then increase to $66

3 from the previous $657. How much more expensive than the older one is this newer device?

1 answer:

larisa [96]3 years ago

8 0

Old value of 5 devices = 657
New value of 5 devices = 663

Increment cost of 5 devices
663 - 657
6

Therefore the increment for one device
6 / 5
1.2

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