Applications to Fractions

Ex. 1 Mary ate 3 slices of her 8 slice pizza. Write the slices of pizza that Mary ate as a fraction.
Soln. 3/8.

Ex2. Jim and Peter did 3/5 work and 2/3 work on building a boat. Working together how much work did they do?
Soln: 3/5 plus 2/3 equals 3×3/15 plus 2×5/15 equals 19/15 work.