Answer:
16
Step-by-step explanation:
8÷2(2+2)
From PEMDAS, we do the equation in the parenthesis first.
8÷2(4)
Since this is division and multiplication we go left to right.
4(4)
16
80 g........12 g salt
120 g........15 g salt
I. 12/80=0.15=15/100= 15 %
II. 15/120=0,125= 125/1000=12,5 /100=12,5 %
if you werw to mix these solutions
120+80=200 g solutions
12+15=27 g salt
27/200=13,5/100= 13.5 %
Answer: The unit rate is 3 centerpieces per hour
Step-by-step explanation:
18centterpieces/6hrs =3