The bag contained red marbles and blue marbles. If the ratio of red marbles to blue marbles was 5 to 3, what fraction of the marbles were blue?

1 Answer
Lil Del
Oct 25, 2016

#3/8# of the marbles in the bag are blue.

Explanation:

A ratio of #5# to #3# means that for every #5# red marbles, there are #3# blue marbles. We also need a total number of marbles, so we must find the sum of red and blue marbles.

#5 + 3 = 8#

So #3# of every #8# marbles in the bag are blue. This means that #3/8# of the marbles in the bag are blue.

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