2006-12-06 12:37:24 · 7 answers · asked by spartan_117 3 in Education & Reference ➔ Homework Help
use proportionality
16/x = 40/100
then cross multiplying
2006-12-06 12:40:11 · answer #1 · answered by Green Tea 3 · 0⤊ 0⤋
the answer is 40. 16/.4=X/1 cross multiply 16 x 1 = .4 x X. then divide .4 into 16 you will find X=40
2006-12-06 12:42:26 · answer #2 · answered by ? 2 · 0⤊ 0⤋
we would say the number you are trying to fing is x
and 16 is 40% of x which could be written as an equation like this : 16 = 40% x
we have 40% = 40 / 100 = 0.4
=> 16 = 0.4 x or we could write it this way : 0.4x = 16
0.4x = 16
x = 16 / 0.4
x = 40
x = 40 and x is the number you need to find => the number is 40
2006-12-06 18:36:14 · answer #3 · answered by chocolate_gurl 2 · 1⤊ 0⤋
if you kind of translate the equation it makes it much easier:
think of "is" as an = sign
16=
then 40% also is .4 as a decimal
16=.4
and finally "of what number" is your unknown so you call it x and then multiply it times your percentage
16=.4x
all you have left to do is divide 16 by .4 and you have your answer
2006-12-06 16:35:56 · answer #4 · answered by snaba 2 · 0⤊ 0⤋
40% is the same as 0.4
x is the number you are trying to solve
16 = 0.4x
divide both sides by 0.4
40=x
2006-12-06 12:40:08 · answer #5 · answered by lisa42088 3 · 0⤊ 0⤋
40
16=(.40)x
x=16/(.4)
x=40
2006-12-06 12:40:24 · answer #6 · answered by ? 2 · 0⤊ 0⤋
look in your book...theres a really basic formula for figuring out these types of questions...i actually just went over them with the girl im tutoring in algebra b yesterday. we found the formula in the book. sorry i cant remember it, but take a look....it must be in there.
2006-12-06 12:42:45 · answer #7 · answered by christina rose 4 · 0⤊ 1⤋