Sparrow ball

On the sparrows ball were males and females. There were 170 sparrows. Males was 20 more than females. How many sparrow female was at a ball?


b =  75


Solution in text b =

170 = a+b
a = 20 + b

a+b = 170
a-b = 20

a = 95
b = 75

Calculated by our linear equations calculator.

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