Question by Cloud - Discuss with MathYouLike

Cloud moderators

04/12/2017 at 08:56

Mac has 25 marbles, of which 20% are red. Thayer has 20 marbles, of which 75% are not red. What is the absolute difference between the numbers of red marbles they have?

List of answers

Dao Trong Luan Coordinator 04/12/2017 at 09:43

The number of marbles of Mac is:

25.20% = 5 [red marbles]

The number of marbles of Thayer is:

\(20.\left(100\%-75\%\right)=5\) [marbles]

So the answer is: 5 - 5 = 0 [marble]

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