Each yogurt is topped with 8 banana slices.  One banana will yield 10 slices.  If Vivian needs to make 5 yogurts, how many bananas does she need to buy?
To make the yogurts, Vivian needs 5 x 8 = <T>multiply(5, 8)=40 banana slices.
She needs to buy 40 / 10 = <T>divide(40, 10)=4.0 bananas.
