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Viefleur [7K]
3 years ago
8

the population of district a is three times the average population of the other nine districts in the city. what percent of the

city's population lives in district a? any idea?
Mathematics
1 answer:
never [62]3 years ago
7 0
Let the average of the other nine cities be x, then the population of the nine districts is 9x. The total population of the city is a + 9x. But a = 3x. Hence, the total population is 3x + 9x = 12x.
Therefore, the percent of the city's population living in district a is 3x/12x * 100 = 25%
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Answer:

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Step-by-step explanation:

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First of all, we will draw a diagram to represent our give scenario as shown in the attachment.

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3 years ago
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