Question

the ratio of goldfish to gallons of water is 7 to 2 how many gallons of water do you need to keep 28 fish

Answer 1

You would need 8 gallons of water because if 7/2 = 28/x You divide 28 by 7, which is 4 so now you multiply 2 by 4 which leaves you with 8

Answer 2

The gallons of water needed to keep 28 fish is 8

The ratio of goldfish to gallons of water is

7:2

let y represent the gallons of water required

The calculation can be done as follows

7/2=28/y

cross multiply

28×2= 7×y

56= 7y

divide both sides by the coefficient of y which is 7

56/7= 7y/y

y= 8

Hence 8 gallons of water are needed to keep 28 fish

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