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Xelga [282]
3 years ago
11

Nora had already read 30% of the book before her teacher assigned it to the class. She is choosing between two options to finish

reading the book.
• Option 1: read 25% of the remaining pages each night

• Option 2: read 28 pages each night
Which option should Nora use to finish the book in the least amount of time?
Fill in the blanks to complete the statements.

Nora has already read ____ pages. She has ____ pages remaining in the book. Nora should choose Option ____ because it will take her ____ nights to finish instead of ____ nights with Option ____. ​
Mathematics
1 answer:
guapka [62]3 years ago
7 0

Answer:

Let p represent the # of pages in the book.  Then, Nora has already read 0.30p pages and has 0.70p pages left to read.

If she reads 25% pages/night, that means reading 0.25(0.70)p pages per night, or 17.5 pages/night.  If 28% p/n, that means 0.28(0.70)p pages/night, or 19.6p pages/night.

How many nights will it take Nora to finish the book if she reads 25% of 7/10 of the book per night?  Without any calculations, we can answer this by "4 nights, since she reads 1/4 of the unread portion of the book per night."

If she reads 28% of 7/10 of the book per night, that will require fewer nights:

First night:  28%

Second night:  28%  

Third night:  28%

 Total:  3(28%) = 84%

This leaves 16% to read on the final night.

This is one interpretation of what I think is a poorly worded question.

The author of this question might have meant reading 25% of the remaining unread pages per night, which leads to a different answer.

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Peggy was taking a timed 90-question test. She was able to correctly answer 80% of the questions but had to skip the rest. How m
professor190 [17]
Multiply your total by your percentage

90 * .80 = 72

72 is the number of questions she answered correctly
7 0
3 years ago
Are the two statements equivalent the ratio of orange. to blue is 3 to 4 <br><br>please help
Anestetic [448]

Answer:

Although I'm not entirely sure of the question (sorry lol), any ratio that is 1.5:2 , 6:8 , 9:12 , 12:18 etc would be equivalent to 3 to 4.

Step-by-step explanation:

If you divide both 3 and 4 by 2 you'd wind up with 1.5 ( 3 ) and 2 ( 4 ). When multiplying, you'd get 3x2 = 6 and 4x2=8, 3x3 = 9 and 4x3 = 12 and so on.

8 0
3 years ago
Kay and Allen sell cell phones. Kay sold 17 more cell phones than Allen. Together they sold 117. How many did they sell individu
denis-greek [22]

Answer:

Kay sold 67 cell phones and Allen sold 50 cell phones.

Step-by-step explanation:

Let k = # cell phones Kay sold and a = # cell phones Allen sold.

k + a = 117

k = 17 + a

So:

(17 + a) + a = 117

2a = 100

a = 50

Plug this back into 2nd equation:

k = 17 + a

k = 17 + 50

k = 67

Kay sold 67 cell phones and Allen sold 50 cell phones.

5 0
3 years ago
Which division problem does the diagram below best illustrate? A diagram with 8 ovals containing 4 squares each. 16 divided by 4
Tems11 [23]

Answer:  32 divided by 4 = 8

Step-by-step explanation:

If the diagram is 8 ovals with 4 squares each, and we know that this is a division, then we have that an unknown number X is such that:

X/4 = 8

this is because we know that the division is by 4 (the number of squares in each oval) and the solution of the division is the number of ovals.

Then we can solve the equation for X.

X/4 = 8

We multiply each side of the equality by 4

X = 4*8 = 32

Then the diagram represents the division:

32/4 = 8 or " 32 divided by 4 = 8"

4 0
2 years ago
Read 2 more answers
Please help, will mark 1st answer as brainiest
Burka [1]

Answer:

they ARE equal, the area is 36 ft^2 for both.

Step-by-step explanation:

area = b x h

their bases and heights are equal, so they have the same area.

9 x 4 = <em>36</em>

7 0
3 years ago
Read 2 more answers
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