Answer:
The answer to your question is 43.8 mL of acid.
Step-by-step explanation:
Data
Total volume = 362 ml
12.1 % is acid
The Volume of acid = ?
Process
1.- Use the rule of three and cross multiplication to solve this problem.
362 ml ------------------- 100%
x ------------------- 12.1 %
x = (12.1 x 362) / 100
x = 4380.2 / 100
x = 43.802 ml
2.- Round your answer to the nearest tenth.
43.802 only consider the first decimal
43.8 mL
3.- Conclusion
A 12.1% solution of acid has 43.8 mL of acid.
Answer:
You have to divide to unit price, 169/13 is equal to 13!
Step-by-step explanation:
Let
x-------> the numbers of blue beads
y-------> the numbers of white beads
we know that
--------> equation 
--------> equation 
Substitute equation
in equation 

Find the value of x

therefore
the answer is
the numbers of blue beads is 