2.25 is 9% of what number?

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2.25 is 9% of what number?

2007-02-20 01:21:59 · 5 answers · asked by daiadem2005 2 in Science & Mathematics ➔ Mathematics

5 answers

Translate the words into math. "Is" means equals, "of" means multiply, "what number?" mean an unknown number:

2.25 = 0.09 * x

x = 2.25/0.09 = 225/9 = 25

2007-02-20 01:27:03 · answer #1 · answered by Anonymous · 0⤊ 0⤋

Ax9% =2.25
Ax9/100=2.25
Ax9=225
A=225/9=25

2007-02-20 09:28:32 · answer #2 · answered by Tuncay U 6 · 0⤊ 0⤋

solution:
9/100 * y = 2.25
9y = 2.25 * 100
9y = 225
y = 225/9
y = 25

The number is therfore 25

2007-02-20 10:01:42 · answer #3 · answered by Nadz 1 · 0⤊ 0⤋

Divide by 9 and multiply by 100.

2007-02-20 09:39:11 · answer #4 · answered by Gnomon 6 · 0⤊ 0⤋

2.25/0.09 = 25

Next!

2007-02-20 09:29:40 · answer #5 · answered by gebobs 6 · 0⤊ 0⤋