Question

1. The sale price of a coffeemaker is $22.75. This is 30% off of the original price. What was the original price of the coffeemaker?
2. One hundred forty countries participated in 1984 Summer Olympics in Los Angeles. This was 75% more than the number of countries that took part in the Summer Olympics in Moscow 4 years earlier. How many countries participated in the 1980 Olympics in Moscow?
3. In 2103, there were 19,767 Starbucks stores world-wide. This is approximately 4551% more stores than in 1994. How many Starbucks stores were there in 1994? (Round to the nearest whole number.)

Answer 1

I think number 1 is easy.

Answer 2

to find the total price have to change 30% to a decimal that would be 0.30

Answer 3

then multiply 22.75 x 0.30 = 6.825 (round it to the nearest cent)

Answer 4

the add 22.75 + 6.83

Answer 5

= $29.58 as the orginal price.

Answer 6

medal me if I am correct.

Answer 7

1. 32.50
2. 80
3. 425

Answer 8

@alayrhi

Answer 9

what do you need help with?

Answer 10

The 1-3 questions

Answer 11

k the answer to 1 is 32.50.

Answer 12

Sorry idk the answers to the others. But i believe @Ben00 is correct.

Answer 13

Then medal me! :D

Answer 14

@welshfella

Answer 15

@LannyXX or @Kevin HELP

Answer 16

Why not try convert each of these statements into algebraic symbols? Convert English to math!!
Here this is the first one:
salePrice = $22.75
salePrice = 30% "of" the original price = 30% * original
find original ???

Answer 17

Try to convert each into math, we can check your work!

Answer 18

So, 22.75 x .03?

Answer 19

30% is 30/100 right?
salePrice = 30/100 * original.
how do you solve for original? if you need to put it in one side, what happens to 30/100?

Answer 20

OK. Let's take this step by step, tell me where exactly you get confused.
English Statement to convert to math: "The sale price of a coffeemaker is $22.75. This is 30% off of the original price. What was the original price of the coffeemaker?"

1. Identify your variables.
a) sale price
b) original price

sale price is known, original price is unknown. you need to find it! :D

2. convert
"The sale price of a coffeemaker is $22.75
this tells us: salePrice = $22.75
"THIS (sale price) is 30% off of the original"
ohhhh.
salePrice = 70% original
see, it's 30% OFF, so you get the saleprice for 70% the price!!! Do you get it so far?

Answer 21

so you go to buy something, and they're giving you 30% off. 100% - 30% = 70%. They're selling their product at 70% the original price

Answer 22

Here's what I have so far: 22.75 x 100/ 70

Answer 23

yeah!!!
salePrice = 70/100 * originalPrice
you multiply both sides by 100/70!

salePrice * 100/70 = originalPrice
you're right, that's the answer for 1.

Answer 24

try to follow the procedure for 2, see if you can identify the knowns and unkowns, then see if you can make an mathematical expression based on them!

Answer 25

it's fine!

Answer 26

Haha thanks, so was I right before I messed up?

Answer 27

2. One hundred forty countries participated in 1984 Summer Olympics in Los Angeles. This was 75% more than the number of countries that took part in the Summer Olympics in Moscow 4 years earlier. How many countries participated in the 1980 Olympics in Moscow?

Known quantities:
number of participant countries in 1984 = 140 countries

Unknown quantities:
number countries participating in Moscow 4 years earlier << FIND (Let's call this x)

Statements:
140 = 75% * x + x
Find x???
140 = 75% x + 100% x = 175% x
x = 140/175%

Answer 28

Remember, it said 75% more. Remember the sales? it was 30% less than the original 100% - 30% = 70%
This is saying it's 175% as much! or the same, and 75% more!

Answer 29

the same trend follows with number 3....
when it says there is 50% more than that for example
I have 50% more cookies than you!!!
It means the number of cookies I have is the number of cookies you have + half of the number of cookies you have.

If I was 100% taller than you.
Then If you're like, say, 100 meters. I'd be 200 meters. Cuz 100% meters + 100% meters = 2 * 100 = 200 meters. I hope those hints can help you solve those problems!!

Answer 30

Kind of confusing there 's two more problems but I am trying them out currently.

Answer 31

Yeah I know. Word problems can be confusing, but with practice you'll become a pro!
Maybe if you can try to explain it to me, we could pinpoint where you're confused. then we can work on that :P

Answer 32

So what you told me so far was confusing for number 3

Answer 33

The way I am trying solve it is not working.

Answer 34

why not?
3. In 2103, there were 19,767 Starbucks stores world-wide. This is approximately 4551% more stores than in 1994. How many Starbucks stores were there in 1994? (Round to the nearest whole number.)

in 2103: We had 19,767 stores
That is 4551% more than we had in 1994....
Let x = numStores in 1994
19767 = x + 4551% x = x ( 1 + 4551/100)

Answer 35

Oh, because the answer is 425. And I thought you subtract both sides.

Answer 36

@NerdyChick16

Answer 37

I am still not getting the correct answer.

Answer 38

Oh I got the answer! :D Thank you all! @LannyXX , so what I did was 19767=4551 x+x, 19767 = 4551%+100% =4651%, then I did was 19767/4651 = 425.

Answer 39

Hurrah!! Also you meant to say 19767/4651% lol or 19767 * 100 / 4651.
Good job~

Answer 40

Yes! :P