Question

The price of a large pizza increased from $10 to $12.

What was the percent of increase in the cost of the pizza? Round to the nearest percent, if necessary.

A.
17%

B.
20%

C.
2%

D.
83%

Answer 1

2 is what percent of 10?

Answer 2

5%

Answer 3

@zimmah

Answer 4

\[\large \frac{ 2 }{ 10 }=\frac{ x }{ 100 }\]

Answer 5

what is x?

Answer 6

50..?

Answer 7

im confused

Answer 8

how did you arrive at 50?

Answer 9

idk

Answer 10

what is 2 divided by 10?

Answer 11

5

Answer 12

actually, that's 10 divided by 2

Answer 13

whats the difference??

Answer 14

well, the same difference as for example 5-3=2 and 3-5=-2. The order of division is important

Answer 15

If you divide a number by 10, you simply move the decimal one place to the left. So 2 becomes 0.2 and 20 becomes 2.0, and so on.

Answer 16

2 divided by 10 is 0.2 and 10 divided by 2 is 5

Answer 17

yes

Answer 18

is it 2%

Answer 19

close, but not quite, you'll have to multiple 0.2 by 100 to get the percentage

Answer 20

20%

Answer 21

a percentage is a 1/100th part of something.

Answer 22

yes

Answer 23

Clare has 130 songs in her music collection. Fifty-nine of the songs are rock and roll.

About what percent of the songs are rock and roll?

A.
41%

B.
45%

C.
59%

D.
71%

Answer 24

because if the pizza was $100 to begin with, and the pizza would increase with the same percentage, the pizza would be $120 an increase of $20 per $100, or 20%

Answer 25

oops my bad

Answer 26

\[\large \frac{ 59 }{ 130 }*100\]

Answer 27

i got 45% is that right..?

Answer 28

yes

Answer 29

what is the solution to the proportion
9/X= 4/12

Answer 30

start by multiplying both sides with 12

Answer 31

is it 17..?

Answer 32

no

Answer 33

oh wait multiplying by 12 may not be the best thing to do

Answer 34

okay i got 9 times 12=108 and 4 times 12= 48

Answer 35

\[\large \frac{ 9 }{ X }=\frac{ 4 }{ 12 }\]
flip both sides\[\large \frac{ X }{ 9 }=\frac{ 12 }{ 4 }\]

Answer 36

yes i figured that would only make it more confusing, sorry for that.

Answer 37

27..?

Answer 38

yes

Answer 39

A bag contains 8 oatmeal cookies and 10 molasses cookies.

What is the ratio, written in lowest terms, of oatmeal cookies to the total number of cookies in the bag?

A.
5 to 4

B.
4 to 5

C.
5 to 9

D.
4 to 9

Answer 40

there's 18 cookies in the bag, and 8 of them are oatmeal

Answer 41

so \[\frac{ 8 }{ 18 }\]

Answer 42

which can be simplified to ....

Answer 43

4/9..?

Answer 44

yes

Answer 45

Three tickets to a concert cost $54.

How much do 7 tickets cost?

A.
$58

B.
$72

C.
$108

D.
$126

Answer 46

i get 135 every time

Answer 47

close, but it's 126. $54*7/3