Respuesta :

cpmaster89
6x3 = 18 and 7x3 = whole tank or 21 because 6/7 have red stripes and 18 of the fish have red stripes so 6/7 is 18 or 6x3= 18  so your answer is 21 fish are in the tank
facundo3141592

Answer: 21

Step-by-step explanation: We know that 6/7 of the fish in the tank have red stripe on them, and the exact number is 18.

This means that, of a number of total fish, X, when we multiply it by 6/7, we obtain 18 as result:

6/7*X = 18

X = 18*7/6 = 21

So we have a total of 21 fish in the tank, where 18 red fish have a red stripe, and the other 3 are different.

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