It will not be accurate, as mixing 1 gallon of acid with one of water will not make 2 gallons. But approximately 7714 gallons of 100% acid would be needed to make a 30% volume/volume acid solution. Your problem now is that very few liquid acids come as 100%, and most that do are very dangerous around water.
15,8408 percent of 18000 = 14408% of 18000= 8% * 18000= 0.08 * 18000= 1440
5 percent of 18000 is 900.
1% of 18000 = 1% * 18000 = 0.01 * 18000 = 180
12% of 18000= 12% * 18000= 0.12 * 18000= 2,160
80% of 18000 = 80% * 18000 = 0.8 * 18000 = 14,400
30% of $18000= 30% * 18000= 0.3 * 18000= $5400.00
10 percent of 18k = 180010% of 18000= 10% * 18000= 0.10 * 18000= 1000
3% of 18,000 = 3% * 18000 = 0.03 * 18000 = 540
Expressed as a percentage, 18000/15000 x 100 = 120 percent.
That is 0.04 x 18000 = 720
18000 x .03 = 540
6% of 18000 = 1080= 6%/100% * 18000= 6 * 180= 1080