Answer included, round as you need
Answer:
7.5%
Step-by-step explanation:
86 - 80 / 80 = 0.075
so 7.5%
The answer is <span>4 3/4 yards of the fabric.</span>
This can be calculated using the proportion.
If the 3 1/6 yards of the fabric is enough for <span>1 1/3 shirts, how many yards are necessary of 2 shirts:
</span>

Let's express 3 1/6 as 19/6:

Similarly, 1 1/3 = 4/3:

Now, let's use this in the proportion:
<span>

</span>

Crossing the products:

⇒

⇒


⇒

Therefore, Mary needs in total 4 3/4 yards of the fabric.
Here is the answer to the problem above. Given that a necktie is sold per dozen and costs $30.00 and sells it for $5. In order for us to know the price per necktie, we just have to divide 30 by 12 since one dozen is 12. 30 divided by 12, and the answer is 2.5. So the cost of one tie is $2.5. Hope this answers your question.