15 - 9 + 2.65 + 1.35 + 3.48
6 + 2.65 + 1.35 + 3.48
8.65 + 1.35 + 3.48
10 + 3.48
13.48
Answer:
<h2>42 and -16</h2>
Step-by-step explanation:
Answer:
9.125
Step-by-step explanation:
9.25 - 1/2 + 3/8 =
= 9.25 - 0.5 + 0.375
= 8.75 + 0.375
= 9.125
Answer:
The answer is 4 liters.
Step-by-step explanation:
We want a final 25% solution, which means that the solvent should constitute 25 percent of all the liters of solution.
Let us call the litres of 40% solution, so when they are added to the 12 litres of 20% solution, the total litres of the new solution are:
of these liters, 25% must be the solvent:
Now for the 40% solution, the liters of the solvent are , and for the 20% liter solution, the liters of solve are liters. Thus the total liters of the solvent are
Therefore