Step-by-step explanation:
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The ratio of new houses to antique houses in a village is 4 : 5 . If there are 12 new houses , how many antique houses are there ?
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✏ Let , the number of antique houses in a village be ' x ' .
Then , According to the question :

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Apply cross product property
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So, The number of antique houses in a village is 15.

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Answer:
7 is answer
Step-by-step explanation:
Let
n-------> the number of nickels
q------> the number of quarters
we know that

so
----> equation A
----> equation B
substitute equation B in equation A
![0.05n+0.25[3n]=1.60](https://tex.z-dn.net/?f=0.05n%2B0.25%5B3n%5D%3D1.60)



Find the value of q

therefore
<u>The answer part a) is</u>
the number of nickels are
and the number of quarters are 
<u>the answer Part b) is</u>
The expressions that represents the number of quarters is
Answer:
Maybe the answer must be 90°