Question

MEDAL PLEASE HELP! :)
A watch is on sale for $120, which is 75% of the regular price. What is the regular price? please explain :)

Answer 1

@blurbendy

Answer 2

@bahrom7893

Answer 3

i can help :)....

Answer 4

Use Algebra to create the equation.
Regular price * discount = sale price
Plug in your numbers and solve for regular price.

Answer 5

please :)

Answer 6

got it! thanks!!!! :)

Answer 7

so you want to solve for the regular price which is "x" x(.75)=120

Answer 8

What about if its

Answer 9

buy a pair of pants for $64 when original was $80 what would the percentage be? plugging it in is not one of the choices given

Answer 10

but why .80?

Answer 11

sorry typo

Answer 12

its $80.00

Answer 13

correct

Answer 14

x should be the percentage

Answer 15

Use the same equation and solve for discount rate.

Answer 16

ohh okay but i did that and you divide 64 by 80?

Answer 17

64=80(x)

Answer 18

yes
change the decimal into a percentage!

Answer 19

but 80% isnt an answer choice

Answer 20

could i take the answer choices and multiply them to 80 to get 64?

Answer 21

but then dont you take what you multiplied and subtract it from original cost?

Answer 22

What are the answer choices?

Answer 23

yeah whatever is the product you subtract from 80 until you get 64

Answer 24

16% 20% 24% 25% 32% i got 20% for my answer is tht correct?

Answer 25

but how come we didnt have to subtract it from the first problem?

Answer 26

Remember that when you multiply by 0.8 you are finding 80% of the original price. That is the cost. You need to find the percentage of the discount.

Answer 27

20% did work

Answer 28

@karolinarivas5 Do you understand how you got the answer and why it works?

Answer 29

yes i understand i just multiplied it from the choices

Answer 30

and the other one solved algeraically

Answer 31

If you didn't have choices, would you have been able to find the answer? If you like I can explain the process a bit better.

Answer 32

yes please :)

Answer 33

so how would you go from there? with only given the question and not choices?

Answer 34

The original price was $80, the sale price was $64. 64 is 80% of 80, but you are not looking for the percentage of the original price that you paid. You are looking for the percentage of the discount. To get that, you can either subtract the percentage that you paid from 100% or you can plug the amount that you did not pay in play of the amount paid. Work the equation both ways to be sure you get the same answer.

This also serves as a good way to double check your answer.

Answer 35

okay im still sorta iffy on it but i'll screen shot your explanation and go over it for further understanding thank you so much though! I have further questions on % though, do you mind if you could help me? :)

Answer 36

Certainly. Ask away. I'm new to this site so I don't know if you can, but feel free to message me any time with questions.

Answer 37

If r is 25% of s, s is 20% of t, and t 50 % of u, what % of u does r equal? is the answer 2.5%??? thats what i got

Answer 38

thank you! :) I really appreciate it :)

Answer 39

Start by writing out your equations.

Answer 40

thats what i did and i plugged into each one

Answer 41

Do your equations look something like this?
0.25s = r
0.2t = s
0.5u = t

Answer 42

yes :)

Answer 43

then i plugged in s and then t and i got .025 which is 2.5%? am i correct? :)

Answer 44

give me a minute and I'll get back to you.

Answer 45

okay thank you! :)

Answer 46

I'm getting a different answer.
Is this another multiple choice?

Answer 47

yes

Answer 48

I must be missing something. You can't solve four variables with three equations.

Answer 49

at the end it says what percent of u does r =?

Answer 50

yeah im pretty sure is .025 or 2.5%

Answer 51

Yes, but you have 4 variables and only 3 equations. I don't know how to solve this one. Please post it in a separate question so someone else can answer. I'll be very interested to see how it is done.

Answer 52

I think ive got it though! its
0.25s = r
0.2t = s
0.5u = t

so plug in 0.25(.2t)=r because u plug in for s
then you get .05t=r
then plug in .05(.5u)=r
r=.025u and thats r = 2.5% of u

Answer 53

Another question i have is : The ratio of the length of a side cube A to the length of a side cube B is 3:2. What is the ratio of the volume of cube A to the volume of cube B?

Answer 54

Do you know how to calculate the volume of the cube?
Assume the ratios are the length of the sides.

Answer 55

no, thats where im stuck :(

Answer 56

Volume for any quadrilateral is length * width * height

Answer 57

The shape is a cube so what are the lengths of each side?

Answer 58

its not given

Answer 59

Yes, it is. Think about dice.

Answer 60

1 2 3? haha idk please restae your questions?

Answer 61

Start with a square. What do we know about the lengths of the sides of a square?

Answer 62

its a 3 to 2 ratio

Answer 63

1 to 1?

Answer 64

Forget the problem for a minute. Just picture a square whose one side = 3.

Answer 65

What do the other sides equal?

Answer 66

3

Answer 67

Exactly. So a cube has height also. What is the height of this cube whose side is 3.

Answer 68

3?

Answer 69

same as a square

Answer 70

yes. So, plug that into the equation for volume.
Length * width * height = volume
Or, in the case of a cube:
\[side^3\]

Answer 71

side * side * side = 3 * 3 * 3 = ?

Answer 72

27

Answer 73

And what is the volume of the other square?

Answer 74

27to8

Answer 75

You got it!

Answer 76

OOH i had that as my ffirst answer yayayay :)

Answer 77

Great!

Answer 78

If two consecutive discounts of 30% are applied to an item, the resulting price is what %? of the original price?

Answer 79

Make up some numbers and test a few equations.

Answer 80

Best to start with a price of 100...

Answer 81

i got 9 know how do i find the resulting price is what % of the original? thats where im stuck

Answer 82

Remember that you want to keep track of the price you are paying and not the discounted price. Then figure out the percentage.

Answer 83

but howww???

Answer 84

im really bad with %'s :(((

Answer 85

A 30% discount means you are still paying what percent?

Answer 86

70%

Answer 87

but its two consecutive 30%s so would it know be 40?

Answer 88

is the answer 40%??? :DDD

Answer 89

Yes. So start with a price of 100 and multiply by 70% twice.

Answer 90

i got 49

Answer 91

yes. What does 49 represent?

Answer 92

the resulting price?

Answer 93

Yes. So you have the original price and the sale price, how do you figure the percentage? You did it in an earlier problem.

Answer 94

is the answer 70%?

Answer 95

No. Start with the equation.

Answer 96

Original price * discount = sale price

Answer 97

49%! :D