Algebra Help Please?

Question

So I have the original price and new price and I need the Price increase and the % of the increase. How do I do that

Original Price/ New Price
1)$25 / $30
2)$1.60 / $2
3)$10 / $14
4)$6 / $7.50

Answer 1

incrase 5 and 20 % incrase
0.4 and 25%
4 and 40%
1.5 and 25%

Answer 2

To find the price increase, subtract the original price from the new price.

To find the % increase, use the formula:

Change in Amount / Original Price (that's a division sign)

So for #1, the change in price would be $30-$25=$5 and the % increase would be (30-25)/25=5/25=25/100=25%

Answer 3

First you have to find the actual change in price (by subtracting) and then see what percent of the original price was the change. For example, in # 1, the change in price was $5 so youhave to see what percent of 25 is 5. Once any % problem is phrased using "is" and "of" you can use the secret formula: is/of = % /100. So 5/25 = x/100. Solve for x by cross multiplying to get 500=25x and divide both sides by 25 to obtain 20, so it is a 20% increase. Try this on #2 and you should get 25%.

Answer 4

Price increase = New price - original price
% of increase = price increase/original price
in case 1:
Price increase = $30 - $25 = $5
% of increase = $5/$25 = 0.2 = 20%

in case 2:
Price increase = 2 - 1.6 = $0.40
% of increase = 0.40/1.6 = 0.25 = 25%

Answer 5

Price increase = new price - old price
% increase = (price increase/original price) x 100

Answer 6

Subtract 1st number from 2nd number to get increase. Then divide increase by 1st number x 100 to get %age

Answer 7

ok well i'll do #1.

well first off, its a $5 increase.

then its 25/30=x/100

you cross multiply(100 times 25 then divide by 30) and then you get your percent.


and if you get it wrong, its your fault for cheating!

but i hope i helped

Answer 8

1.)
(30 - 25)/25 * 100 = (5/25) * 100 = (1/5) * 100 = 20%

ANS : $5 and 20%

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2.)
((2 - 1.6)/1.6) * 100 = (.4/1.6) * 100 = .25 * 100 = 25%

ANS : 40¢ and 25%

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3.)
((14 - 10)/10) * 100 = (4/10) * 100 = (2/5) * 100 = 40%

ANS : $4 and 40%

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4.)
((7.5 - 6)/6) * 100 = (1.5/6) * 100 = .25 * 100 = 25%

ANS : $1.50 and 25%

Answer 9

Check out matyh help

Answer 10

I just answered this exact question a few minutes ago

so did some other people

http://answers.yahoo.com/question/index;_ylt=Aii4B1mPAVhXXpdKUKcuuGzsy6IX?qid=20060829185058AAiuVJE