Answer:
29.16
Step-by-step explanation:
8 percent of 27 is 2.16 so you do 27+2.16 and you get 29.16
Answer:
17.5 %
Step-by-step explanation:
5.6 is 17.5 percent of 32
Answer:
The chemist needs to add 400mL of 40% solution.
Step-by-step explanation:
The equation
gives the percent concentration 
of the final mixture, when 
mL of the 40% solution are added.
Now we are asked, how many milliliters of the 40% solution should the chemist add to get final percent concentration 
; this is just a matter of solving the equation
and we solve it the following way:
Thus, the chemist needs 400mL of 40% solution to get 30% concentration of the final mixture.
0.16 i think but i am not 100% sure
Answer:
5/12
Step-by-step explanation:
change 1 1/4 to improper fraction:
1 1/4=5/4
find common denominator: 12
5/4=15/12
5/6=10/12
subtract:
15/12-10/12=5/12
hopefully this helps :)
