CPM Homework Help : MC2 Problem 2-117

Camille had a very fun birthday party with lots of friends and family attending. The party lasted for $3$ hours. She and her friends played games for $\frac { 3 } { 8 }$ of the time, ate pizza and cake for $50\%$ of the time, and spent the remainder of the time opening presents. Draw a diagram and make calculations to show the amount of time spent opening presents.

Hint:

A vertical rectangle. The rectangle at right can represent the 3-hour party.
Subdivide the rectangle into 8 equal portions and shade 3 to represent the time spent playing games.

More Help:

If three eighths of the party was game playing and $50\%$ was eating, the length of the party can be represented like this. How much time remains? The rectangle is divided into 8 rows of 3 columns, with the top row unshaded, rows 2, 3, & 4 are shaded dark blue, and bottom 4 rows are shaded light blue.

Answer:

One eighth of the total party, $22.5$ minutes or $0.375$ hours.

A vertical rectangle.

The rectangle is divided into 8 rows of 3 columns, with the top row unshaded, rows 2, 3, & 4 are shaded dark blue, and bottom 4 rows are shaded light blue.