Answer:
6 L
Step-by-step explanation:
Given two solutions:
1st solution is 90% saline solution. Let the volume of this solution be
litres.
2nd solution is 50% saline solution. Volume of this solution = 4 L
Resultant solution is 74% saline.
To find:
The volume of 1st solution = ?
Solution:
Total volume of the 74% saline mixture = (4+
) Litres
We can write equation here, as per the percentage of saline in the mixtures.
90% of
L + 50% of 4 L = 74% of (
+4)

Therefore, the volume must be <em>6 L</em>.
Answer:
3 3/4 is equal to 3.75, and 15 divided by 4 =3.75!
Step-by-step explanation:
<span>7.8x - 17.2 when x= 5
</span>
Ans: 21.8
Try looking up videos on adding decimals (Youtube) It helped me understand.