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chubhunter [2.5K]
3 years ago
10

A builder needs to cover 10 square yards of floor with tile. red tile costs $60 per square yard, and white tole costs $40 per sq

uare yard. if the builder spends exactly $480 on tile, how much of the floor will be overed with RED tile?
Mathematics
1 answer:
dsp733 years ago
6 0

Answer:40 square yards

Step-by-step explanation:

Given

Floor area A=10 square yards

Red tile costs \$ 60 per square yards

White tile costs \$40 per square yards

Total money spent=\$480 on tiles

Suppose red tiles cover an area of x square yards

So, we can write

60\times x+40\times (10-x)=480\\60x+400-40x=480\\20x=80\\x=40\ \text{square yards}

Red tiles cover an area of 40 square yards  

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I've included a picture so you can see.

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Next, to determine if it is obtuse or acute, usually your supposed to use a^2 + b^2 = c^2

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If c was equal to a and b then it would be right.

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So the answer would be the last option.

If you ever need more help, don't be afraid to reach out. I hope that helps!

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