The handler family spent a total of $26.75 on lunch. they bought 5 drinks and 3 sandwiches. each drink costs $2.50 less than a sandwich. which of the following equations could be used to find the cost of each sandwich?

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Ответ:

tobyfoerst

13.01.2022

Mathematics

$5(x-2.5)+3x=26.75\\x=4.90625$\\Where x is cost of sandwich.$

Step-by-step explanation:

Let cost of 1 sandwich

Let cost of 1 drink

$3x+5y=26.75\\x-y=2.5 \Rightarrow y=x-2.5\\$

Now from the first equation

$3x+5(x-2.5)=26.75\\8x-12.5=26.75\\8x=39.25\\x=4.90625$

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Ответ:

poptropic9207

23.10.2020

Mathematics

In step 2, Rhett used the associative property.

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