2007-12-14 09:54:14 · 7 answers · asked by Nicky 2 in Science & Mathematics ➔ Mathematics
45%<------>18
100%<----> (100/45) x 18
(20/9) x 18
20 x 2
40
2007-12-17 06:30:11 · answer #1 · answered by Como 7 · 3⤊ 2⤋
18 is 45% of 18*100/45 = 40
2007-12-14 10:04:59 · answer #2 · answered by sv 7 · 0⤊ 2⤋
18 is 45% of x
18/1 /9/20= 18/1 *20/9= 18 becomes a 2 and 9 becomes a 1 so 2*20-=40
2007-12-14 12:40:25 · answer #3 · answered by Dave aka Spider Monkey 7 · 0⤊ 2⤋
18=.45x
x=18/.45
2007-12-14 10:01:15 · answer #4 · answered by ひいらぎ 5 · 0⤊ 1⤋
Let x be a number we are looking for.
45% of x = 18
0.45x = 19
45/100 x = 18
9/20 x = 18
x = 18 * 20/9
x = 40
18 is 45% of 40
Good Luck
2007-12-14 09:57:59 · answer #5 · answered by Anonymous · 1⤊ 3⤋
40
2007-12-14 09:57:13 · answer #6 · answered by Ms. Exxclusive 5 · 2⤊ 1⤋
In this type of word problem,
"is" means equal
"of" means multiply
Using those rules, set up the equation
18 = .45x
Now solve the equation for x
40 = x
18 is 45% of 40
2007-12-14 10:01:21 · answer #7 · answered by Math Helper 3 · 0⤊ 2⤋