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Mickey used these calculations to find how much he would spend on 7 cartons of eggs, if 12 cartons of eggs cost $22.20. Describe his error.


12 cartons(÷22.20)
$22.22(÷22.20)


Unit price = $0.54
$0.54(7) = $3.78

Respuesta :

jmaes49
Mickey incorrectly calculated the unit price:
[tex] \frac{12}{22.20} = 0.54[/tex]

The correct operation is:
[tex] \frac{22.20}{12} = 1.85[/tex]

Each carton costs 1.85, so 7 cartons cost
[tex]1.85 \times 7 = 12.95[/tex]

The error mickey made was that he divided the number of 12 cartons by the cost of $22.20 instead of dividing the cost of $22.20 by the number of  12 cartons.

Solving this just involves basic arithmetic calculations.

We are told that 12 cartons of eggs cost $22.20.

This means to get the price per carton, we need to divide the cost by the number of cartons as follows;

Unit price per carton = 22.2/12 = $1.85 per carton

To get the price of 7 cartons, we will just multiply the unit price by 7 to get;

Price of 7 cartons = $1.85 × 7

Price of 7 cartons = $12.95

The error mickey made was that he divided the number of 12 cartons by the cost of $22.20 instead of dividing the cost of $22.20 by the number of  12 cartons.

Read more at; brainly.com/question/18008915

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