Large family

I have as many brothers as sisters, and each of my brothers has twice as many sisters as brothers. How many children do parents have?

Final Answer:

n =  7

Step-by-step explanation:

m 1 = z 2(z  1) = m  2(z1)=z+1  2 (z1)=z+1  z=3  m=z+1=3+1=4  n=m+z=4+3=7



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