2006-07-27 15:46:38 · 15 answers · asked by Anonymous in Education & Reference ➔ Homework Help
divide 25 by 28 and then multiply by 100, which is the same as moving the decimal point 2 places to the right.
In this case, 25/28 = .892857 *100 = 89.2857%
2006-07-27 15:52:23 · answer #1 · answered by Steve 7 · 5⤊ 0⤋
The trick is in translating the question from a word problem to an equation. Here are a couple of hints to help you do that:
1) Words like "what" or "how many" are your variables. Just substitute in an x or some other variable for those words.
2) The word "of" usually means times, so substitute a times sign for that.
3) The word "is" is an equals sign.
Thus (ignoring "percent" for now),
what percent of 28 is 25
becomes
x * 28 = 25
and then you can solve for x, which comes out to about 0.893
To express this answer as a percentage, multiply it by 100.
Finally, it's always a good idea to check your work against your intuition. Think 25 is almost as big as 28, and 89% is almost as much as 100%, so this answer makes sense.
2006-07-27 23:04:36 · answer #2 · answered by McNeef 4 · 0⤊ 0⤋
P = R x B
Percentage = Rate x Base
part is Rate(the%) of the whole
25 is <-- is means equals
what % <--the rate
of <-- means multiply
28 <-- the whole
So:
25 = ? x 28
25/28 = ?
Divide and change to %
2006-07-27 22:56:45 · answer #3 · answered by Jolie 3 · 0⤊ 0⤋
The KEY with percents is to realize that it has 2 parts, the portion and the base. The base is the "whole pie," or total.
To calculate the percentage, you simply take the portion divided by the base, and then multiply that result by 100.
Doing this would give us 25/28 x 100, which is 89.29%.
And you can check your answer by multiplying the Base (28) by the rate (0.8929) to see if you get the 25 portion size.
2006-07-28 20:57:21 · answer #4 · answered by msoexpert 6 · 0⤊ 0⤋
25 = x/100 (28)
= 89%
2006-07-27 22:51:35 · answer #5 · answered by katzchen75 4 · 0⤊ 0⤋
create an equasion 25/28=?/100 multiply 25*100, then divide by 28 :)
2006-07-27 22:50:45 · answer #6 · answered by Anonymous · 0⤊ 0⤋
25 divided by 28 = 89.3%
25 / 28 = 0.89285714285714285714285714285714
2006-07-27 22:50:42 · answer #7 · answered by manofadvntr 5 · 0⤊ 0⤋
When you get problems like this, think of the unknown number as x, the "of" as a multiplication sign, and the "is" as an equal sign. It then becomes a simple algebraeic equation -- 28x=25. Then just divide the 28 from both sides and you'll find your x number. Hope this helps!
2006-07-27 22:59:37 · answer #8 · answered by future_PhARMER 1 · 0⤊ 0⤋
25 is to 28 as n is to 100. Cross multiply, you get 2500 = 28n
so divide 2500 by 28 and round the answer.
= 89.29%
2006-07-27 22:52:36 · answer #9 · answered by Nitris 3 · 0⤊ 0⤋
put x over 100 and 25 over 28 and cross multiply
2006-07-27 22:51:19 · answer #10 · answered by sanchez detail 3 · 0⤊ 0⤋