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3 years ago

The ratio of red to black pens in a box is 1:3. If there are 480 pens in the box altogether how many black pens are in the box?

Mathematics

1 answer:

Setler [38]3 years ago

3 0

Answer: 320 black pens

Step-by-step explanation:

480 ÷ 3 = 160

160 red pens

Then you have

160 + 160 = 320 black pens

If you have any questions let me know! :)

Hope this helps!!! Good luck!!! ;)

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<u>Solution:</u>

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The midpoint of a segment formed by $\left(\mathrm{x}_{1}, \mathrm{y}_{1}\right) \text { and }\left(\mathrm{x}_{2}, \mathrm{y}_{2}\right)$ is given by:

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$\begin{array}{l}{m=\left(\frac{-6+(-3)}{2}, \frac{6+(-9)}{2}\right)=\left(\frac{-6-3}{2}, \frac{6-9}{2}\right)} \\\\ {=\left(\frac{-9}{2}, \frac{-3}{2}\right)}\end{array}$

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