Math Question?

Question

If your doing percent of change and trying to find the original number could you give me the steps you would do to solve this
Original:(trying to fing)
New Amount: 230
15% increase


{Please don't just give me the answer}

Answer 1

200 is original

230/1.15 (115% 100% Original+15% increase)

Answer 2

If new amount after 15% increase = 230

Then 230 = 115%

1% = 230 ÷ 115 = 2

Therefore: 100% = 2 x 100 = 200 = Original number.

(Why go into algebra with x's & y's ... etc. ?)

Answer 3

To explain:
230 is the 'new amount' that is 15% larger than the original.
So 230 is 115% of the original
We want to find the original number (which is obviously 100% of itself).

How do you get from 115% to 100%?
Well, you divide by 1.15

So to get from 230 to the original number, we divide by 1.15 and get 200.

Answer 4

15% increase means 115% of the original number. So you do the following (let x be original number):

115/100 * x = 230

Divide by 115/100: x = 100*230/115
x = 200

Answer 5

Hi
The simple way is to add 15% to 100% (since you are working with an increase). 100% is your original number and 15% is the increase. The two together are your final number.
Then divide that total (115% or 1.15) into your final amount.
230 divided by 1.15 (115%) = 200.

Any help?

Answer 6

Its always (change) / (original amount) = %

so it would be (230 - x) / (x) = .15

To solve, multiply by 'x'

230 - x = .15x

230 = 1.15x
200 = x