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Dawn Lingua bought three yards of cloth to make some curtains. The cloth was on sale for $2.25 per yard. How much did Dawn pay for the cloth if the sales tax was 5%?
a) $2.36
b) $7.25
c) $8.07
d) $7.09

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So we want to see how much did Dawn pay for the three yards of cloth if one yard is 2.25$ and the sales tax is 5%. So the sales tax increases the value in this case for 5% so the new value is 105% or 105/100. Now we see what the value of one yard of cloth is and that is (105/100)*2.25$=2.3625$. So 3 jards of cloth are 3*2.3625$=7.0875$ so the correct answer is D.

In order to solve for total sales, you first must solve for the amount of sales tax. Since she bought 3 yards of cloth, she bought  worth of cloth. Now to find the sales tax, multiply that value by , which looks like  (I'm rounding to the nearest cent). So to solve for the total cost, add those two values together. So the answer is , which is answer choice D.

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