Margo had 68 of a whole pizza left over from last night’s dinner. She ate 28 of the pizza for lunch. What fractional part of the leftover pizza did Margo eat for lunch?

68 and 28 are not possible.

.28/.68 = ?

If you meant 6/8 and 2/8, then that's the whole (8/8) pizza!

sorry. Your gabled fractions made me misread the whole thing!

since 2 is 1/3 of 6,
2/8 is 1/3 of 6/8.

1/4

To find the fractional part of the leftover pizza that Margo ate for lunch, we need to determine the fraction of pizza eaten out of the total leftover pizza.

Step 1: Determine the total leftover pizza:
Margo had 68 of a whole pizza leftover from last night's dinner.

Step 2: Determine the pizza eaten for lunch:
Margo ate 28 of the pizza for lunch.

Step 3: Calculate the fractional part:
To find the fraction of the leftover pizza that Margo ate for lunch, divide the amount eaten (28) by the total leftover pizza (68).
Fraction = Amount Eaten / Total Leftover Pizza
Fraction = 28 / 68

Step 4: Simplify the fraction (if possible):
We can simplify the fraction by dividing the numerator and denominator by their greatest common divisor.
28 and 68 both have a common divisor of 4.
Fraction = (28/4) / (68/4)
Fraction = 7/17

Therefore, Margo ate 7/17 of the leftover pizza for lunch, which is the fractional part of the leftover pizza she consumed.