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3 years ago

A population was reduced from 3000 to 2500 in the ratio 5:y what is y

Mathematics

1 answer:

natka813 [3]3 years ago

4 0

Answer:

solution,

The population is reduced from 3000 to 2509 in the ratio 5:y

 $\frac{2500}{3000} = \frac{5}{y} \\ or \: 2500y = 15000 \\ or \: y = \frac{15000}{2500} \\ y = 6$ 

Hence,the ratio is 5:6.

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Answer:

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Step-by-step explanation:

If we use variables to represent the box contents, we can write ...

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Then the values of x and y are ...

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For the sum to be the smallest, we must have x be as small as possible and the ratio (f-e)/d be as negative as possible.

x will be small for large 'a' and for (c+b) small. For y to be as negative as possible, we want 'd' and 'f' small and 'e' large. Best results are obtained for

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For these coefficients, the sum is -6 1/8 = -49/8.

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For the sum to be the largest, we must have x as large as possible: (b+c) large and 'a' small. At the same time we must have y be positive and as large as possible: (f-e) positive and large, 'd' small. Best results are obtained for

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For these coefficients, the sum is 19. Again, 'b' and 'c' can be swapped with no effect.

_____

Additional comment

These extreme values are verified by examination of the 60,480 possible permutations of the coefficients.

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