We did this same kind of problem in school. All we did was divide the those 2 numbers to figure out the unit price. So, 20/5 = 4 $ per CD.
The Answer is -3/2
Below is how I got that answer
(-12) / 6+2
-12/ 8 (Simplify the problem by adding 6 and 2, remove the parenthesis).
-3/2 (Simplify -12/8 by dividing it by 4)
Each pound costs $1.19 .
So 15 pounds cost
(15) x ($1.19) = $17.85 .
Two buckets of seawater contain
kg of salt.
Step-by-step explanation:
Amount of salt in 1 kg water = 
It is given that;
1 liter = 
500 liters = 
500 liters = 548 kilogram
As,
1 kg of seawater =
of salt
548 kilograms = 
548 kilograms =
kilograms of salt
Two buckets of seawater contain
kg of salt.
Keywords: unit rate, multiplication
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