7 gallons of pure acid and 14 gallons of 10% acid
Answer:
x = 10
y = 20
Step-by-step explanation:
7x + 90 + 20 = 180
7x = 70
5x + 2y = 90
50 + 2y = 90
2y = 40
2/9, 2/8, 2/3
2/9= 0.22 (to 2 decimal point)
2/8= 0.25
2/3 = 0.67
13/9
Step-by-step explanation
d=2-5/9
d=13/9
40% and 4/10
If you convert them into decimals, they will both give the same decimals which gives 0.4
