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kaheart [24]
4 years ago
9

Jennifer can do 8 math problems in 20 minutes. How long would it take her to complete a 10 question test at the same rate?

Mathematics
2 answers:
Oksana_A [137]4 years ago
7 0

Answer:

25 minutes

Step-by-step explanation:

<u>→You can set this problem up as a proportion, like so:</u>

<u />\frac{8}{10} =\frac{20}{x}

<u>→Cross multiply:</u>

<u />\frac{8x}{200}

<u>→Divide 200 by 8:</u>

x = 25

-BARSIC- [3]4 years ago
3 0

Answer:

25 minutes

Step-by-step explanation: 20 divided by 8 equals 2.5 so she take 2 and a half minutes per question. 2.5 plus 2.5 equals 5 so just add five minutes on her original time. 25 minutes

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5 0
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What is 13% of what is 260?
nata0808 [166]

First make the 2 numbers into fractions:

13% = 13/100

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Cross multiply them

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To check do it reverse:

33.80/260 = x/100

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The answer is 33.80

7 0
3 years ago
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Answer:

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Step-by-step explanation:

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