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bogdanovich [222]
3 years ago
5

I don’t understand the word problem.

Mathematics
1 answer:
brilliants [131]3 years ago
6 0

Remark

The population that is middle class  is (4/5) * 2000 * 4/5 = 8000/5 = 1600

The others are 2000 - 1600 = 400 which should be 1/5 of the population.

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