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2 years ago

9

A bag contains 144 marbles. Some are red and the rest are black.There are 11 red marbles for every black marble.How many red mar

bles are in the bag?

1 answer:

wolverine [178]2 years ago

3 0

Answer:

There are 132 red marbles and 12 black marbles

Work:

I made a ratio of 11:1 and multiplied both sides by 12 which gave me 132:12

132+12=144

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