Question 318751
{{{15N=18*(8+1/3)}}} 
{{{15N=18*(24/3+1/3)}}} 
{{{15N=18*(25/3)}}} 
{{{N=(18/15)*(5/3)}}} 
{{{N=(6/3)*(5/1)}}} 
{{{N=(2)*(5)}}} 
{{{  N=10 }}} 

b) is the correct answer.