a little math help ? figuring out percentages

[Chief]

i'm thinkin this is geek zone, and altho i guess it's for computer n technology questions, i think math goes hand in hand.

if i want to make a percentage on something, how do i figure it out

example, i buy something at cost for $5, i want to make 30% on that $5. how do i figure it out

[duncan228]

You want 130% of $5.00 (your original $5.00 + 30%).

1.3 x 5 = 6.5

You would sell it for $6.50

Or:

(.3 x 5) + 5 = 6.5 (same $6.50)

[Chief]

You want 130% of $5.00 (your original $5.00 + 30%).

1.3 x 5 = 6.5

You would sell it for $6.50

Or:

(.3 x 5) + 5 = 6.5 (same $6.50)

but that comes out to 23% profit
using the profit formula
(sell - cost)/cost

[duncan228]

(sell - cost)/cost

(6.50 - 5.00)/5.00 = .3

which is 30% profit

[duncan228]

Another way:

$5.00 x 30% = $1.50

$5.00 + $1.50 = $6.50

[ElNono]

One more way:

(amount * percentage) / 100 = profit
amount + profit = total

(5 * 30) / 100 = 1.5
5 + 1.5 = 6.5

[Sense]

but that comes out to 23% profit
using the profit formula
(sell - cost)/cost

lol math fail.. u do need help

[Heath Ledger]

what are you selling for a thirty percent profit, its a very slim margin on a low ticket item unless you know that you can sell a high volume of this product.

[TDMVPDPOY]

fail

[Chief]

(sell - cost)/cost

(6.50 - 5.00)/5.00 = .3

which is 30% profit

Another way:

$5.00 x 30% = $1.50

$5.00 + $1.50 = $6.50

One more way:

(amount * percentage) / 100 = profit
amount + profit = total

(5 * 30) / 100 = 1.5
5 + 1.5 = 6.5

Thanks guys, appreciate it

[sabar]

You don't need math when you gots google!

http://www.google.com/#hl=en&q=130%25+of+5&aq=f&oq=&aqi=g5&fp=KxYPMM6r3X A