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r-ruslan [8.4K]
3 years ago
7

You and your friend are shopping for painting supplies. Your friend wants five bottles of paint and one set of paint brushes. Yo

u want seven bottles of paint and two sets of paint brushes. Each bottle of paint costs $3.69. If you and your friend’s total cost is $51.69, what is the cost of one set of paint brushes?
Mathematics
1 answer:
ANTONII [103]3 years ago
7 0
So your friend bought 1 set of brush and 5 bottles of paint
you bought 2 brushes and 7 bottles of paint
1 bottle=3.69
friends cost+your cost=51.69
total you bought 3 brushes and 12 bottles

each bottle is 3.69
12*3.69=44.28
totalcost=51.69=3brushes+12bottles

51.69=3brushes+44.28
minus 44.28 from both sides
7.41=3brushes
divide both sides by 3
2.47=1brush



1 set of paint brushes=$2.47
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Things to think about:

Why didn’t I just show you by using any two even numbers like the number 4 and the number 26?

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Why did I specifically say that m and k were integers?

 

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