If Jessica obtained 2 out of 20 concerns wrong ~ above her many recent mathematics quiz, what percent walk she obtain correct?
Explanation:
Since she obtained 2 the end of 20 incorrect, we can an initial figure out the percent incorrect. We deserve to either uncover the decimal for 2/20, or make 2/20 a portion with 100 in the denominator. In this case, it is easier to do the latter. We must multiply 20 by 5 to acquire 100, thus we main point 2 by 5 to acquire 10. Then, we have that 2/20 is equivalent to 10/100. She shed 10 percent ~ above her math quiz, leave her through a score the 90%.
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10/100 = 10% wrong
(100%) – (10% wrong) = 90% right
Which the the complying with represents the portion

Explanation:
We need to collection up a relationship to transform our portion to x/100.

Cross multiply.
(1)(100) = (8)(x)
100 = 8x
Divide both political parties by 8.
(100)/8 = (8x)/8
100/8 = x
Simplify.
100/8 = 25/2 = 12.5
Our price is 12.5%.




A die was rolling




Explanation:
Here, the most essential step is to understand what the concern is asking.
A "




A number various other than



Now, the last step is to convert






A very big bag is filled v marbles.


Explanation:
First, friend must find what fraction of the bag is filled with yellow marbles. We recognize that



or

Next, you transform

Jamie ate


Explanation:
Jamie ate




Billy empties his pockets and finds some change. He find 2 quarters, 4 dimes, 5 nickels and also 9 pennies. What portion of the coins are nickels?
Explanation:
First, we can discover out the ratio of coins that are nickels. So, we know there are 5 nickels and also we deserve to count there space 20 coins total

So over there are


Thus our answer is 25%.
A student took a test and also got 13 the end of 20 concerns correct. What portion of inquiries did this student get correct?
Explanation:
We have the right to mathematically write "13 out of 20" together a fraction.

We can convert this to a percent by setup up a proportion.

Cross multiply and solve because that

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So, the student acquired

Explanation:
To find the percent, first, collection up the fraction as a long division problem whereby the 1 is put inside the dividend and 8 is inserted in the divisor: