Question

what is 20% of 2/3 of 15?

a) 1
b) 2
c) 3
d) 4
f) 5

Answer 1

do you mean like 20% x 2/3 x 15?

Answer 2

I'm not very sure. This is exactly what I had on my paper. @Rose6

Answer 3

oh ok sorry i couldn't help much

Answer 4

It's ok. Thanks though @Rose6

Answer 5

no prob. :)

Answer 6

first u gotta do is 2/3 times 15
to find what two third of 15 is

Answer 7

\[\frac{ 2 }{ 3 }\times15\]

Answer 8

dont answer the question look at the code plz

Answer 9

we have to tell them how to solve not telling them answers

Answer 10

Sorry, but what code? @jkim3592

Answer 11

Code of Conduct

Answer 12

Hello! You have to work backwards on this one. The first step is to find 2/3 of 15. Do you know how to do that?

Answer 13

not really...

Answer 14

ok. well 15 is equal to 15/1, you understand that, right?

Answer 15

yes I do.

Answer 16

good. to multiply fractions, you take the top two and multiply them, and do the same with the bottom two. so a/b times c/d is equal to ac/bd

Answer 17

now try to multiply 2/3 and 15/1.

Answer 18

ok.

Answer 19

did you get it?

Answer 20

would it be 30/3? or 90/3?

Answer 21

it would be 30/3

Answer 22

sorry if i wasn't clear on the "a/b times c/d" thing

Answer 23

Thats ok, no problem.

Answer 24

so what's 30/3?

Answer 25

so now, would the answer be 1?

Answer 26

be careful there. try again with 30 divided by 3

Answer 27

10 I mean.

Answer 28

10/20 = 2

Answer 29

10 is right! now for the 20% of 10. We need to convert the percent to a decimal before we use it to multiply. can you convert 20% to a decimal?

Answer 30

.20

Answer 31

right? or .02

Answer 32

you were right, .20

Answer 33

now multiply .20 by 10.

Answer 34

2! :D

Answer 35

yup.

Answer 36

Thank you very much!

Answer 37

no problem

Answer 38

anytime

Answer 39

would you min helping me on another problem please? If not, it's fine. :)

Answer 40

of course!

Answer 41

Great!

Answer 42

After two months on a diet, John's weight dropped from 168 pounds to 147 pounds. By what percent did John's weight drop?

Answer 43

ok. So what was john's original weight?

Answer 44

147. So what I have up to right now is 168/147.

Answer 45

I'm sorry. I meant to type 147/168.

Answer 46

well, there are a couple of ways to do this problem. The number you have right now (147/168) is the percent for how much he has right now

Answer 47

can you convert 147/168 to a percent?

Answer 48

1.14% ?

Answer 49

well, what's 147 divided by 168? give me the decimal value

Answer 50

My appologies, this is probably very easy but I'm not sure what decimal value is...or dont remember.

Answer 51

for example 1/2 is .5 in decimal

Answer 52

1/2 is a fraction, .5 is a decimal, and 50% is a percent

Answer 53

.27

Answer 54

not quite. what's 147 divided by 168?

Answer 55

.87
I don't know where I got .27 from.

Answer 56

it's actually .875. your calculator might be cutting it off or something

Answer 57

the whole thing showed but I didn't think I needed to type the 5. Ok, now I know.

Answer 58

sometimes you don't, but for this one you do :)
ok. so we know .875 or 87.5% is how much John has left, so we need to take that number away from 100%. so what's 100%-87.5%?

Answer 59

It is 12.5

Answer 60

and that's how much he lost, which is the answer! I'm not sure if the way we solved this is the way your teacher wanted you to. do you want me to show you another way?

Answer 61

Sure. 12.5 would equal to 12 1/2 correct? This is one of the answers I have on my paper.

Answer 62

Actually, you don'need to. It's fine. :)

Answer 63

that's right!

Answer 64

Thank you very much! Would you mind helping me again please? You're a great help. :)

Answer 65

keep them coming! :P

Answer 66

happy to help

Answer 67

Great!

Answer 68

Which expression is equivalent to 0.01?
(wait one moment please.)

Answer 69

2) 0.01/10
3) 1/100
4) 1/100/1/10
5) 1/10^4