Question

A student raises her grade average from a 75 to 90 what was the percent of increase in the students grade round your answers to the nearest tenth of a percent if NECESSARY
A. 20%
B. 16.7%
C. 8.3%
D. 15%

Answer 1

@Brooklyn_Boiii @Hero @kxttxn @Missiey @ParthKohli @Pawanyadav

Answer 2

look im bad a percentages but i think it's A

Answer 3

@phi

Answer 4

first, write the fraction: amount of change divided by original amount
can you do that ?

Answer 5

um not really

Answer 6

what is the change (difference) between 75 and 90 ?

Answer 7

75 is a smaller amount then 90

Answer 8

yes, but by how much ?

Answer 9

15

Answer 10

yes, the change from 75 to 90 is 15
15 goes in the top of the fraction.
The bottom of the fraction is the original amount. What is the original number?

Answer 11

the original number is 75 (and then it changes to 90)
to find the percent change we write the fraction
\[ \frac{15}{75}\]

Answer 12

Can you simplify that fraction and change it into a decimal ?

Answer 13

15/75 reduces to 3/25 which is 12% then as a decimal = 0.12 @phi

Answer 14

that is the right idea, but your arithmetic is wrong
you can divide top and bottom by 3 to get
5/25
then divide top and bottom by 5 to get
1/5
that is 0.2 or 20%

Answer 15

so i was right it's 20%? @phi

Answer 16

or 15%

Answer 17

Being "right" means being able to do the problem (not just the final answer)
If you are running a race and get to the finish line, it does not count if you used a car.
In other words, you really want to know *how to get the 20%*
So try hard to learn how to do the problem.

Answer 18

simplify 15/75
(you do not get 3/25)

Answer 19

wait ur confusing me what is it 20 or 15 @phi

Answer 20

can you simplify 15/75 ?

Answer 21

=0.2 @phi

Answer 22

@tom982 may u tell me

Answer 23

or u @maddie82502 idk if it's 15 or 20

Answer 24

yes 0.2 and that is 20%

Answer 25

Yes \(\frac{15}{75}=\frac{1}{5}=0.2\) which, as a percentage, is \(20\)%.

Answer 26

I think its 20%

Answer 27

kk thanks guy @maddie i want to fan everybody so can u fan @phi and i fan u and @phi fans @tom982

Answer 28

Oh don't worry about that, I'm not fussed about medals/fans.

Answer 29

oh ok well can u fan me then @maddie82502 idk

Answer 30

I fanned everyone

Answer 31

oh ok thanks didnt know u can fan everyone

Answer 32

oh wait im so sorry i ment medals

Answer 33

i medaled u @maddie82502 u should of did @phi and i wont be medaled

Answer 34

im srry

Answer 35

it's ok