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jacob used 1/7 of liter of water to fill 1/9 of the fish aquarium. how many liters of water are needed to fill the aquarium



Answer :

To find the result we can use proportion

[tex] \frac{1}{7} --------------- \frac{1}{9} \\ x ---------------1[/tex]

Now we have crossmultiply, so
[tex] \frac{1}{7}*1= \frac{1}{9} *x [/tex]      /*9     (multiply both sides by 9)
[tex] \frac{9}{7}=x [/tex] - its the result

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