Answer:
c
Step-by-step explanation:
i just know
Answer:
Step-by-step explanation:
D) 221
We let the amount of 32% acid solution added to be X ,
Firstly, 40 of 0.12 conc. , = 4.8L of acid, and 35.2L non acid
For ever 1 L of 32% acid we add in we get 0.32L of acid and + 0.68L non Acid,
So we formulate an equation
(4.8+0.32X) / (40+X) = 16/100
(4.8+0.32X) = 0.16(40+X) =6.4+0.16X
0.16X = 1.6
X =10
Hence she used 10L of 32% Solution acid.
Answer:
x=3
Step-by-step explanation:
-8x-8x=-48
combine like terms
-16x=-48
divide -48 by -16
x=3
Answer:
50 grams
Step-by-step explanation:
You simply subtract 70 from 120, and get 50.
