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skad [1K]
3 years ago
5

If i have 20 questions on my test and 65% is a passing grade how many do i need to get right

Mathematics
2 answers:
mrs_skeptik [129]3 years ago
8 0
13.

65% = 65/100, and 65/100 * 20 = 13
Rina8888 [55]3 years ago
5 0
You would need to answer 13 out of 20 questions to get 65%.
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Step-by-step explanation:

The first step is to set up expresssions for the two shares:

Let  x = the amount of one share.  The other share is 1785 - x.  <u>You don't have to worry about which is smaller--that part will work out automatically</u>!

The two shares are in the ratio of 2:3, so set up the proportion

\frac{x}{1785-x}=\frac{2}{3}

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Solve the proportion for  x  by "cross multiplying" -- use the Means-Extremes Property of proportions.

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So one share is £714£ and the other is £1785 - £714 = £1071.

The smaller share is £714.

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