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Eddi Din [679]
3 years ago
5

A-project-of-construction-of-a-building-can-be-completed-by-150-workers-in-40-days-But-project-manager-brought-30-more-workers-a

fter-16-days-In-how-many-days-will-the-remaining-work-be-finished
Mathematics
1 answer:
IRINA_888 [86]3 years ago
8 0

Answer:

In the second scenario after 16 days, 150 workers would have completed 150*16=2400 worker days. That leaves 6000-2400=3600 worker days remaining. If you add 30 workers, it would take 3600/180=20 days longer to complete. So, the entire project would take 16+20=36 days to complete.

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A, B and C

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In the equation: 3y=27x

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The constant of proportionality between y and x  is 9.

We want to determine which relationships have the same constant of proportionality 9.

<u>Option A</u>

y=9x

The constant of proportionality is 9.

<u>Option B</u>

2y=18x

Divide both sides by 2 to obtain: y=9x

The constant of proportionality is 9.

<u>Option C</u>

x=3, y=1/3

Substitution into y=kx gives:

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The constant of proportionality is 9.

<u>Option D</u>

x=6, y=2/3

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<u>Option E</u>

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However, when x=4, y=27

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27=4k

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This is not a proportional relation since the constant of proportionality is not equal.

The correct options are A, B and C

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