During a sale, The price of a sweater was changed from $20 to $16. What was the percent of the decrease in the price of the sweater?(Please show work:) )

Answers

Answer 1

Answer: $16/$20 = x%/100% (in a proportion)

Cross-multiply

1600 = 20x

Divide 1600 by 20

x = 80

80%/100%

Because you know the price decreased, you subtract 80 from 100 to find your answer

100 - 80 = 20% decrease in price

Hope this helps!

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How can you use a rate to compare the cost of two boxes of cereal that are different sizes

Answers

Answer:

Step-by-step explanation:

I think it is quite simple

Step 1. Find out the cost per ounce.

Step 2. Divide the cost of the box by the number of ounces.

hope this will find you well!

I know of one way, but I'm not sure if this is what you're looking for. Let me give an example to help:

I have 2 cereal boxes. One that weighs 10oz and cost $5, and another that weighed 6oz and cost $2. To compare them, you'd create ratios. I'll do oz/$

$(10)/(5)$ & $(6)/(2)$
Simplify. You should get 2 and 3. Now we know that the 10oz for $5 is a better deal than 6oz for $2.

What fraction is the same as 0.2?

Answers

$0,2 = \boxed { (2)/(10) }$

It is 2/10 (two over ten) because 0.2 is two tenths.

How do you work out? (step by step please)
2x-4≥6(x-1)

Answers

$2x-4 \geq 6(x-1)\n\n 2x-4 \geq 6x-6 \n\n 2x-6x \geq -6+4 \n\n-4x \geq -2 \ |:(-2) \n\n 2x \leq 1 \n\n x \leq (1)/(2) \n\n \boxed{x= (-\infty; (1)/(2) ] }$

Jan buys 12 pens for 10$. Each pen costs the same amount of money. Write a proportion to find the number of pens Jan can buy $15. Then solve your proportion for the number of pens.

Answers

You can write the proportion as 2 equal fractions or as two equal ratios.
$(12)/(10) = (x)/(15)$ or 12 pens:$10 = x pens:$15

You can buy x pens for 15 dollars. One way to find x is by cross multiplying the fractions.

10x=12×15
10x=180
----- -----
10 10
x=18

You can buy 18 pens for $15.

Mixed numbers between 0 and two with an interval of one third between each pair of mixed numbers

Answers

mixed numbers are fractions that are greater than 1 so exg 8 and 3/4

between0 and 2 that means not including 0 or 2
start at >1 because mixed numbers must be greater tahn 1
2 examples are
1 and 1/3
1 and 2/3

How to you write 2 5/6 as a fraction

Answers

25\100 that means 25 out of a 100 hope this helps

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