Answer:
1000
Step-by-step explanation:
Explanation is in a file
bit.
ly/3a8Nt8n
Answer:
20.04
Step-by-step explanation:
He marked it down to 67%. Not up
Answer:
50 liters
Step-by-step explanation:
If x is the volume of 20% acid, then:
x (0.20) + 20 (0.45) = (x + 20) (0.30)
0.2x + 9 = 0.3x + 6
3 = 0.1x
x = 30
30 liters of 20% acid are needed, so there will be a total of 50 liters of 30% acid.
False because 6 is divisible by 2 and 3, but not 12