Question

There are about 6,600,000,000 people living in the world. the male to female ratio is 107 to 100. about how many males are there?
A: 3,300,000,000
B: 462,000,000
C: 100,000,000
D: 1,000

Answer 1

3,300,000,000 would be you answer so A.

Answer 2

Ratio   107:100:207
            M : F   : 6.6B(total)
            cross multiplication 
M=6.6Bx107/207
   = about 3.3B
answer is A