Question

HELP I have no idea how to do this.

Answer 1

The 1st one should be larger

Answer 2

140 divided by 5.10 ( or 5ft and 10in ) comes to 27
so 27 out of 140 are professional basketball players in the U.S part

Now the NBA is ( take that 350-450 subtract those 2, that gives you 100) 100 divided by 6.70 ( or 6ft and 7in ) that's 14 out of that 100 

not that this part matters but I always subtract my totals
27 - 14= 13
there are 13 more basketball players in the U.S part than the NBA part
tada