Gabriel is looking at her marble sets. She sees that in the first set 10% of her marbles are broken. In the second set, 20% of the marbles are broken. The first set contains 50 marbles. The second set contains 60. How many marbles are broken in total?
In the first set there are 5 broken marbles because 50 x .1 = <T>multiply(50, 0.1)=5.0
In the second set there are 12 broken marbles because 60 x .2 = <T>multiply(60, 0.2)=12.0
There are 17 broken marbles in total because 5 + 12 = <T>add(5, 12)=17
