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Slav-nsk [51]
3 years ago
15

Chanda can bake and decorate 72 cookies in 2.5 hours. At this rate,how long will it take her to bake and decorate 108 cookies?

Mathematics
1 answer:
In-s [12.5K]3 years ago
7 0

Hello there! A. 3.75 hours is your answer.

Okay, so lets start by finding the unit rate. To find the unit rate, we can use this formula: total ÷ time = unit rate.

total (72 cookies) ÷ time (2.5 hours) = unit rate. (how many cookies she can decorate and bake in an hour)

72 ÷ 2.5 = 28.8 cookies an hour

Now that we have this information, replace the 180 cookies in for the total number and use algebra to solve.

180 cookies ÷ x time = 28.8

Since 180 is a little more than 2 times 72, A would best fit since 3.75 is much closer to 2.5 than the other options. To check this, we can place 3.75 in for x in 180 ÷ x = 28.8.

180 ÷ 3.75 = 28.8.

So, this is your correct answer.

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<em>hey there,</em>

<em />

< 54-10x ≤ 20+7x

This is kind of simplified as if it was an equation with "=". First, put all the "x"s to one side.

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<u>Hope this helped! Feel free to ask anything else.</u>

(Also for future reference, you can add your question in the question box instead of into the comments.)

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