There are two cups of salt water. One cup of 20% salt water weighs 50g, and the other cup of 40% salt water weighs 75g. Now pour the two cups of salt water together. What's the salt content after pouring them together?

There are two cups of salt water. One cup of 20% salt water weighs 50g, and the other cup of 40% salt water weighs 75g. Now pour the two cups of salt water together. What's the salt content after pouring them together?

The total salt content is: 50 * 20% + 75 * 40% = 40g
The salt content is 40 (50 + 75) = 32%

One kilogram of salt water contains 50 grams of salt, which is made of salt water______ %．

50 △ 1000 = 0.05 = 5%. A: salt is 5% of salt water

There are two cups of salt water, one of which weighs 50g when the salt content is 20%, and the other weighs 75g when the salt content is 40%. Now put the two cups of salt water together. What's the salt content of the salt water when they are together?

The total salt content is: 50 * 20% + 75 * 40% = 40g
The salt content is 40 (50 + 75) = 32%

How to solve 300 + X 300x8% 2 120 + X 120x12.5 equation?

The equation should be wrong, there should be a percent sign
300×8%/(300+x)=120×12.5%/(120+x)
24/(300+x)=15/(120+x)
24(120+x)=15(300+x)
2880+24x=4500+15x
24x-15x=4500-2880
9x=1620
x=180

Solving equation 15% x + 25% x = 4.2

40%x=4.2
x= 10.5

The solution equation: X / 15-x / 25 = 1.2

x/15-x/25=1.2
5x/75-3x/75=1.2
2x/75=1.2
x=1.2*75/2
x=45

Solve the equation (1) x △ 15 + 0.4 = x △ 12-0.1 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; (2) 150.5-4x + 0.5x = 7.5

（1）x÷15+0.4=x÷12-0.1，          115x+0.4=112x-0.1，     115x+0.4-115x=112x-0.1-115x，       &nbs...

12: 15 = 0.4: X to solve the equation

12:15=0.4:x
12x=15*0.4
x=6/12
x=1/2
x=0.5

I want 15 simple percentage solutions, such as 80% x = 260, and 20 simple percentage solutions, such as 85% x + 25 = 372
Come on,

60%X=6 12%x=4.8 75%X=15 120%x=81.6
20%x+5.6=9.4 52－50%x ＝15 91%x ＝13
X+8.3=10.7 15%x ＝3 40%x－8＝16
30%x+9=27 18%x=270 12%x=300
70%x+5.3=7.4 30%x÷5=4.8 30%x+25=85
1.4×8-20%x=6 60%x-12.8×3=0.06 410-40%x=170
X-0.25= 25% 25%X =30%
4+70%X=102 X-37.5%X=400
X+X50%=42 X+25%X=105
70%X+ 20%X = 3.6 X×60%=20×25% X- 15%X = 68 X＋37.5%X＝121
2/3X÷25%＝12 x- 80%x = 22
X＋25%X=90 X-12.5%X=8
80%x -4= 21 X＋25%X=90
70%X+ 20%X = 3.6 25%+ 10X = 80%
X - 15%X = 68 25%X+ 10X = 4/5

Solve the equation 4 / 20 + 4 / 15 + X / 15-x / 25 = 1,

4/20+4/15+x/15-x/25=1
(1/15-1/25)x=1-4/20-4/15
2x/75=8/15
x=8/15÷2/75
x=20