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3 years ago

30 points please help

Mathematics

1 answer:

SIZIF [17.4K]3 years ago

6 0

Its option C

Verification

$\\ \sf\longmapsto x-5y\lt 7$

$\\ \sf\longmapsto -3-5(2)\lt 7$

$\\ \sf\longmapsto -3-10\lt 7$

$\\ \sf\longmapsto -13\lt 7$

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Step-by-step explanation:

Let x be the time taken by each person to paint the fence.

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$\dfrac{1}{t}=\dfrac{1}{24}+\dfrac{1}{24}+\dfrac{1}{24}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{3}{24}\\\\\Rightarrow\ t=\dfrac{24}{3}=8\text{ hours}$

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3 years ago

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3 years ago

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sineoko [7]

Answer:

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