Question

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 Describe his error​

Answer 1

Mickey made a calculation error by subtracting rather than dividing to find the unit price of the cartons of eggs. The correct unit price per carton is $1.85, making the cost for 7 cartons $12.95.

Step-by-step explanation:

Mickey is trying to calculate how much he would spend on 7 cartons of eggs based on the cost of 12 cartons. However, there is a mistake in his calculation that we need to identify. To find the unit price of one carton of eggs, Mickey should have divided the total cost by the number of cartons. The correct calculation is as follows:

• Total cost for 12 cartons := $22.20
• Unit price per carton := Total cost ÷ number of cartons
• Unit price := $22.20 ÷ 12
• Unit price := $1.85
• Now, to find the cost for 7 cartons:
• Cost for 7 cartons := $1.85 × 7
• Cost for 7 cartons := $12.95

Mickey's error was calculating the unit price incorrectly. He subtracted 22 from 22.20, getting a unit price of $0.54 instead of dividing 22.20 by 12 to find the true unit price of $1.85.

Answer 2

Mickey made an error in calculating the unit price of eggs, resulting in an incorrect total cost for 7 cartons.

Step-by-step explanation:

The error in Mickey's calculations is that he incorrectly calculated the unit price of the eggs. He divided the total cost by the number of cartons, instead of multiplying the total cost by the reciprocal of the number of cartons. Here is the correct calculation:

1. Calculate the unit price of the eggs: $22.20 ÷ 12 = $1.85
2. Multiply the unit price by the number of cartons: $1.85 × 7 = $12.95

Therefore, Mickey would spend $12.95 on 7 cartons of eggs.