SOLUTION: You are thinking of purchasing an aquarium for your parents. You need to know how many fish to purchase for an aquarium. The rule of thumb is to purchase "as many fish that measure

Question 785994: You are thinking of purchasing an aquarium for your parents. You need to know how many fish to purchase for an aquarium. The rule of thumb is to purchase "as many fish that measure 3 inches, or 3 fish-inches, for each 2 gallons of water in an aquarium."
a) define variables for the quantities that are changing in this problem situation.
We came up with 3 fish/2gallons of water equals 1 fish/2 gallons of water. I don't know if this is correct.
b) write an equation for fish-inches based on the gallons of water.
we came up with: 3/2 = x/10
30/2x
x = 15 one inch fish per 10 gallons of water
or 5 three inch fish
Is that correct?
c) Use your equation to answer each of the following questions:
If an aquarium holds 10 gallons of water, how many fish inches should you purchase? Is 15 one inch fish or 5 three inch fish correct?
d) If you want to purchase a 5 - inch fish, two 2inch fish, and three 3 inch fish, how many gallons of water should the aquarium hold? Show your work. I have no clue how to do this.

Answer by harpazo(655) (Show Source): You can put this solution on YOUR website!

Let me be honest. We online tutors are volunteers. This means there is no pay. We do this because math is our passion. However, we seek students who, firstly, show some effort and secondly do not expect us to do your homework. No one will answer this question as one post. Instead, divide the question into several posts. In so doing, you will not only receive a quick reply but also give different tutors a chance to answer one "piece" of the question. Understand? We are not in the class with you. On exam day, you will be there alone. Math is not a spectator's sport. You must practice to improve. Please, repost your question one part at a time.
P.S. Also, post your question exactly as written in your notebook or textbook. Otherwise, you are just wasting your time in this or any other math forum. Ok? I hope this helps.
RELATED QUESTIONS
Where is P is the number of fish and x is the number of months since the fish were placed (answered by MRperkins)

There were 200 fish in an aquarium, 99% of which were red. How many red fish must be... (answered by josgarithmetic,MathTherapy,Alan3354)

You are draining your fish aquarium. After 2 minutes, there are 6 gallons of water in the (answered by josgarithmetic)

Jill decides to move her fish from a 20 gallon aquarium to a 50 gallon aquarium. She... (answered by josmiceli,Boreal)

2. You have an order for an 8 gallon aquarium that is 20 inches long and 10.5 inches... (answered by Alan3354)

90 tropical fish were placed in an aquarium for the next 12 month. 12 month after the... (answered by stanbon)

90 tropical fish were placed in an aquarium for the next 12 month. one month after the... (answered by stanbon)

Anyone willing o help me? I don't get this at all I can give you the question and some... (answered by stanbon)

In an aquarium there are 2061 fish(guppies and mollies). A third of the fish are guppies... (answered by srinivas.g)