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12345 [234]
2 years ago
6

The price of a DVD movie was reduced from $20 to $18. By what percentage was the price of the DVD movie reduced? *

Mathematics
1 answer:
Alla [95]2 years ago
6 0

Answer:

A. 10%

Step-by-step explanation:

First calculate how much percentage is in one dollar, which is 5% per dollar, then times that by how much money is deducted which is $2, and you will get your answer 10%.

Hope this helps good luck!

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Common ratio of 135,45, 15, 5,
olchik [2.2K]

9514 1404 393

Answer:

  1/3

Step-by-step explanation:

If the ratio is common, you can choose any successive numbers to compute it. Smaller numbers may be more familiar. The ratio is ...

  5/15 = 1/3

4 0
2 years ago
Type a digit that makes this statement true.<br><br> 145,00<br> is divisible by 5.
Volgvan

Answer:

145,000÷5=29000

or 14500÷5=2900

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
A computer training institute has 625 students that are paying a course fee of $400. Their research shows that for every $20 red
Anastasy [175]
1.
If no changes are made, the school has a revenue of :

625*400$/student=250,000$

2.
Assume that the school decides to reduce n*20$.

This means that there will be an increase of 50n students.

Thus there are 625 + 50n students, each paying 400-20n dollars.

The revenue is: 

(625 + 50n)*(400-20n)=12.5(50+n)*20(20-n)=250(n+50)(20-n)

3.

check the options that we have, 

a fee of $380 means that n=1, thus 

250(n+50)(20-n)=250(1+50)(20-1)=242,250   ($)


a fee of $320 means that n=4, thus

 250(n+50)(20-n)=250(4+50)(20-4)=216,000    ($)


the other options cannot be considered since neither 400-275, nor 400-325 are multiples of 20.

Conclusion, neither of the possible choices should be applied, since they will reduce the revenue.
6 0
3 years ago
Eight times a number is the same as 30 less than 5 times the number. Find the number?
Charra [1.4K]

Answer:

x = -10

Step-by-step explanation:

We just have to translate the problem correctly

>8 times a number is the same

this tells me that

8x = ...

>as 30 less than 5 times the number.

... = 5x - 30

Now set them equal to eachother

8x = 5x - 30

Now isolate the variable x

8x - 5x = 5x - 5x - 30\\3x = -30\\x = \frac{-30}{3} = -10

6 0
3 years ago
Read 2 more answers
A data value that is much higher or much lower then the other values on the data set?
Nitella [24]
A. Outlier is the answer.
5 0
3 years ago
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