Answer:
Must add 100 milliliters of water
Step-by-step explanation:
Let
x ----> milliliters of water to add
we know that
Originally
The milliliters of lemon concentrate is equal to the 10% of 100 mL
so
[tex]0.10(100)=10\ mL[/tex]
Now
The balance of lemon concentrate is equal to 5%
The milliliters of lemon concentrate is the same
so
[tex]0.05(100+x)=10[/tex]
solve for x
[tex]5+0.05x=10[/tex]
[tex]x=100\ mL[/tex]
therefore
Must add 100 milliliters of water
