If Jessica obtained 2 out of 20 concerns wrong ~ above her many recent mathematics quiz, what percent walk she obtain correct?
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
We need to collection up a relationship to transform our portion to x/100.
(1)(100) = (8)(x)
100 = 8x
Divide both political parties by 8.
(100)/8 = (8x)/8
100/8 = x
100/8 = 25/2 = 12.5
Our price is 12.5%.
A die was rolling
Here, the most essential step is to understand what the concern is asking.
A number various other than
Now, the last step is to convert
A very big bag is filled v marbles.
First, friend must find what fraction of the bag is filled with yellow marbles. We recognize that
Next, you transform
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?
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?
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
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: