2007-01-11 10:10:10 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
75 divided by 20%
= 75 / .20
= 375
2007-01-11 10:12:59 · answer #1 · answered by MsMath 7 · 4⤊ 1⤋
Write this out as follows. 20% of what number = 75. The word "OF" in math means multiply. and "what number" means variable. We know that 20% is also written 0.20 (because we need to move the decimal two spaces left). So 0.20 times X = 75 or .20x = 75. To solve for x we need to get alone and thus we'll divide both sides by .20 and we finish with x = 375.
Hope that helps. Good luck in your math.
2007-01-11 18:15:26 · answer #2 · answered by Chaney34 5 · 1⤊ 0⤋
20% can be expressed 20/100 (always view % meaning 1/100, so 20% becomes 20/100)
let x be your unknown
x = 20% x 75
x = 20/100 x 75 (substituted for the % sign)
x= 1500 / 100
x = 15
as you get proficient with percentages, you can drop the equation and just do the math on the right hand side of the equation. But sometimes to arrange your thoughts, it does not hurt to lay it out on paper.
Another approach to work out percentages in your head
first divide the amount by 100 (which is easy to do),
75 by 100 = .75
then multiply .75 by 20 = 15
why divide by 100? because % = 1/100
2007-01-11 18:21:24 · answer #3 · answered by srrl_ferroequinologist 3 · 0⤊ 2⤋
The rate corresponding to 20% is .2
.2x = 75
x = 75/.2 = 375
2007-01-11 18:14:53 · answer #4 · answered by kindricko 7 · 0⤊ 0⤋
if 20% = 75
1% = 75/20 = 3.75
100% = 3.75 X 100 = 375
2007-01-11 18:14:55 · answer #5 · answered by DaveJ7 2 · 1⤊ 0⤋
375
2007-01-11 18:15:53 · answer #6 · answered by Michael L 2 · 0⤊ 0⤋
"20%": 0.2
"of": multiply
"what #": x
"is": =
The translation to an equation is:
0.2x = 75.
Divide both sides by 0.2 to isolate the variable, x:
x = 375.
2007-01-11 21:05:47 · answer #7 · answered by S. B. 6 · 0⤊ 0⤋
37.5 (divide 20 into 75 = 37.5
2007-01-11 18:14:04 · answer #8 · answered by Anonymous · 0⤊ 2⤋
.2x=75
x=375
2007-01-11 18:19:10 · answer #9 · answered by 7 · 0⤊ 0⤋