Question 459593

a)  2/6 * 5/12 + 4/6 * 8/12

= 5/36 + 4/9

= 21/36 

= 7/12 
 
b) 4/6*8/12 / [  2/6 * 5/12 + 4/6 * 8/12]  ( by Bye's method)

=  4/9 / [7/12]

=  16/21