12 / 3 = 0.25 = 25%
3 is 25% of 12.
It depends on what the problem is!
1.5 pints
x = 10% solution y = 35% solution .1x+.35y=.20*12 x+y=12 y=12-x .1x+.35(12-x)=.20*12 .1x+4.2-.35x=2.4 -.25x=-1.8 .25x=1.8 x=7.2 gallons y=4.8 gallons
Raise your score by 12%.
Your problem here probably lies in the fact that you are functionally illiterate. Nonetheless, the answer is 32 litres. 75% of 16 = 12 12/0.25 = 48. 48 - 12 - 4 (the original volume of water) = 32.
It depends on what the problem is!
10 gallons..
1.5 pints
To find percents, divide the whole by 100 and multiply by percent rate. For this question, the example problem and solution will be:Problem: find 14 percent of 1600Solution: 1600 / 100 * 14 = 16 * 14 = 224
x = 10% solution y = 35% solution .1x+.35y=.20*12 x+y=12 y=12-x .1x+.35(12-x)=.20*12 .1x+4.2-.35x=2.4 -.25x=-1.8 .25x=1.8 x=7.2 gallons y=4.8 gallons
The solution to 0.5 percent of what number is 12 is 2,400. The number name is 2 thousand 400.
Let x = the amount of 12% solution. Let 40 - x = the amount of 16% solution. So we have, (0.12)x + (0.16)(40 - x) = (0.15)(40) (0.12)x + 6.4 - 0.16x = 6 -0.04x = 6 - 6.4 -0.04x = -0.4 x = -0.4/-0.04 x = 10 There are 10 ml of the 12% solution, which leaves 30 ml as the amount of 16% solution.
4 litres
x+y = 240 0.06x + 0.12y =240(0.07) = 16.8 0.06x + 0.12(240 - x) = 16.8 0.06x + 28.8 - 0.12x = 16.8 -0.06x = -12 x = 200.......6% solution y = 40........12% solution
pharmacist
6.7
The difference between 6%, 9%, and 12% Hydrogen Peroxide solution is the Hydrogen content.