+0  
 
0
99
1
avatar

In a class of 60, where there are twice as many girls as boys, Kamal is ranked 17th from the top. There are 9 girls ahead of him in the ranking. How many boys are after him?

 Jul 5, 2020
 #1
avatar+28021 
+1

If there are 9 girls ahead of him , therre must be 7 boys ahead of him and then Kamal  all of the rest of the boys are after him

   now find how many boys are in class

b = boys    2b = girls     

 

b   + 2b = 60

       b = 20  

 

so there is 7 ahead + kamal = 8  in the top 17                       which leaves  20 - 8 = 12 after Kamal

 Jul 5, 2020

37 Online Users

avatar