The price per organic egg is 50 cents. The price of a tray of eggs that contains 30 eggs is $12. How much can you save, in cents, per egg if you buy a tray versus individual eggs?
Let's think: The price per egg in a tray is $12 / 30 eggs = $0.4 / egg. The equivalent of $0.4 in cents is $0.4 x 100 cents / dollar = 40 cents. Hence, you can save 50 cents - 40 cents = 10 cents per egg if you buy a tray.. The answer is: 10.

Nancy bought a pie sliced it into 8 pieces. She gave 1/2 to Joe and Darcy, and she gave 1/4 to Carl. How many slices were left?
Let's think: The total number of slices she gave to Joe and Darcy is 1 / 2 x 8 = 4. The total slice she gave to Carl is 1 / 4 x 8 = 2. Therefore, the total slices left is 8 - 4 - 2 = 2.. The answer is: 2.

Cristine bought a dozen lemons and gave 1/4 of them to her neighbor. How many lemons does Cristine have left?
Let's think: Cristine bought 1 x 12 = 12 lemons. She gave 12 x 1 / 4 = 3 lemons to her neighbor. So, Cristine is left with 12 - 3 = 9 lemons.. The answer is: 9.

Shara collects shells. She had 20 shells before she went on vacation. On vacation, she found 5 shells per day for 3 days. Then he found 6 shells on the fourth day. How many shells does she have now?
Let's think:
Shara collected 5 x 3 = 15 shells for 3 days. So she collected 15 + 6 = 21 shells rom her vacation. Thus, she now has a total of 20 + 21 = 41 shells.. The answer is: 41.