Question

A dance school has 63 ballet dancers. If 42% of the total number of dancers in the school are ballet dancers, what is the total number of dancers in the school?

Answer 1

Multiply 0.42 x 63.

Answer 2

(0.42 is 42%)

Answer 3

I did and it was not an answer that was there

Answer 4

Did you move the decimal in the right place??

Answer 5

what do mean dont you just Multiply

Answer 6

0.42 x 63 = 26.46

Answer 7

Thats what i got aswell

Answer 8

wait look at this

Answer 9

@kkdiamond With?

Answer 10

ratios

Answer 11

@kkdiamond Tbh i suck at ratios.

Answer 12

ok

Answer 13

Oh... Then i have no clue.

Answer 14

ok

Answer 15

i will medal and fan

Answer 16

\(\rm \color{#20bd23}{\dfrac{part}{whole}=\dfrac{percent}{100}}\)

Part = 63
Whole = Unknown
Percent = 42%

Plug in the values given in the formula above

\(\rm \color{#20bd23}{\dfrac{63}{whole}=\dfrac{42}{100}}\)

We are trying to solve for the whole. The whole is your answer.
The first step to solving this is to cross multiply 63 by 100, so what is 63 x 100?

Answer 17

6300

Answer 18

If you were trying to find 42% of 63, you would do this : 0.42 x 63, but you are not trying to find 42% of 63. You are trying to find 63 is 42% of what number.

Answer 19

No...

Answer 20

Cross multiply.

Answer 21

Correct, so now we take 6300 and then divide it by 42, so what is 6300/42?

Answer 22

42x = 6300

Answer 23

6300 / 42.

Answer 24

Crap, late.

Answer 25

150

Answer 26

Correct, so that is our answer :)

Answer 27

And you can check by dividing 63 by 150, so 63/150

Answer 28

If 63/150 = 0.42 = 42% then this is correct

Answer 29

so can we go over it again pls

Answer 30

You want me to explain the problem again?

Answer 31

(FaceDesk)

Answer 32

Because I can explain it in a more detailed way

Answer 33

well how to do it pls

Answer 34

yes pls

Answer 35

Use the formula part/whole =percent/100.

Answer 36

\(\rm \color{#20bd23}{\dfrac{part}{whole}=\dfrac{percent}{100}}\)

Well, we have this formula that can help us, but what does part, whole, and percent mean?

Part is a part of the number you are trying to find, so let's say you are trying to find '13 is 50% of 26' 13 would be your part, because you are trying to find 13 is 50% of your whole (26)

The percent is, well.. The percent. Any other questions?

Answer 37

It is difficult to explain sometimes. I wish I could find a good explanation, but that formula I have been using since forever and I don't remember the full explanation. I have to brb a second and I will try to explain some more

Answer 38

OKay back. So say we have to find out 40 is 40% of what number

We can plug in the part and percent into the formula I have given.

Answer 39

Now, we can cross multiply the part, 40, by 100

Now we take 4,000 and divide it by the percent, 40.

Answer 40

So 40 is 40% of 100