In a fish tank, 65% is female fishes. the rest are male. female fishes are also 15 less than twice of male fishes. how many female fishes and male fishes in the tank ?

There are 105 male fishes and 195 female fishes

Step-by-step explanation:

Let

x> the number of female fishes

y> the number of male fishes

we know that

65%=65/100=0.65

so

x=0.65(x+y) > equation A

x=2y-15 > equation B

substitute equation B in equation A and solve for xy

2y-15=0.65(2y-15+y)

2y-15=1.30y-9.75+0.65y

2y-15=1.95y-9.75

2y-1.95y=-9.75+15

0.05y=5.25

y=105 male fishes

Find the value of x

x=2(105)-15=195 female fishes

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step-by-step explanation:

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step-by-step explanation: