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-BARSIC- [3]
3 years ago
6

A local company had revenues of $2,800 last year. They spent 1/4 of their revenues on marketing and 1/7 of the remaining money o

n upgrading their facilities. How much money did they have left after marketing and upgrading the facilities? Group of answer choices
Mathematics
1 answer:
WARRIOR [948]3 years ago
7 0

Answer:

$1,800

Step-by-step explanation:

Given

Total revenue last year = $2,800

If they spent 1/4 of their revenues on marketing;

Amount spent on marketing = 1/4 * 2800

Amount spent on marketing = $700

Remaining money = 2800 - 700

Remaining money = $2100

If 1/7 of the remaining money is spent on upgrading their facilities, then;

Amount spent on upgrading facilities = 1/7 * 2100

Amount spent on upgrading facilities = $300

Total amount spent on marketing and facilities  = $700 + $300

Total amount spent on marketing and facilities  = $1000

Amount left = $2,800 - $1,000

Amount left = $1,800

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Given that:

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= 1 -[\frac{(e^{-5.8}*5.8^0)    }{ 0!   } + \frac{(e^{-5.8}*5.8^1)    }{ 1!   } +\frac{(e^{-5.8}*5.8^2)    }{ 2!   } +\frac{(e^{-5.8}*5.8^3)    }{ 3!   } +\frac{(e^{-5.8}*5.8^4)    }{ 4!   } +\frac{(e^{-5.8}*5.8^5)    }{ 5!   } ]

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∴ the probability that, in any hour, more than 5 customers will arrive =0.5217

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