Question

1/3 of the fishes are cat fish .2/9 of the fishes are guppies and the rest are goldfish . There are are 40 goldfish in a tank. How many fishes are there in the tank

Answer 1

Let the total no. of fishes be x

Goldfish ratio = 1-(1/3+2/9)

=1-(3+2/9)

= 9-5/9

=4/9

No of goldlfish = 40

4x/9 = 40

x = 40×9/4

x= 90

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