2% of what number is 5?? I have no clue what I'm doing thanks :)
2007-04-13 12:26:49 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
find the base when the amount and percent are known.
amount / percent = base
convert 2 % to decimal
remove the % symbol. divide 2 by 100
2 / 100 = 0.02
Divide 5 by the decimal
5 / 0.02 = 250
The base is 250
5 is 2 % of 250
- - - - - - - s-
2007-04-13 13:55:42 · answer #1 · answered by SAMUEL D 7 · 0⤊ 0⤋
Write it as a proportion with the percent number over 100 = the part over the total (the total is the number after the word "of")
2/100 = 5/n
cross multiply: 2n = 500
divide by 2: n = 250
2007-04-13 19:31:05 · answer #2 · answered by hayharbr 7 · 0⤊ 0⤋
Do this:
0.02 x N = 5 or 1/50 x N = 5
(1/50)(50/1) x N = (5)(50/1)
N = 250
you times 1/50 by its reciprocal and you get 1. Then you times
5 by 50/1 and get 250.
2007-04-13 19:42:22 · answer #3 · answered by Polly Esther 2 · 0⤊ 0⤋
The main number is always 100%
Do you know the main number? No... so that is going to be your unknown.
x --> 100%
---- = -----
5 --> 2%
Cross multiply:
2x = 100*5
2x = 500
x = 500/2
x = 250
The number that you are looking for is 250!
:@)
2007-04-13 19:35:55 · answer #4 · answered by l77onica 2 · 0⤊ 0⤋
2% = 5 ( ÷ 2)
1% = 5
100% = 250
The required number is 250.
2007-04-13 19:32:07 · answer #5 · answered by Brenmore 5 · 0⤊ 0⤋
set up a ratio
2/100 = 5/x
500=2x
x=250
2007-04-13 19:30:54 · answer #6 · answered by GGGGGunit_ 4 · 0⤊ 0⤋
I remember I learned this little "reminder" in middle school.
is/of = x/100
5 takes the "is" and the unknown number takes the "of".
By setting up this proportion, cross multiply and solve for x.
5/x = 2/100
500 = 2x
x = 250
There's your answer. ^__^
2007-04-13 19:35:40 · answer #7 · answered by yummy 2 · 0⤊ 0⤋
2x/100=5
500=2x
x=250 simple
2007-04-13 19:35:31 · answer #8 · answered by Pierre L 2 · 0⤊ 0⤋