+0  
 
0
108
3
avatar

John is 10 times the age of his sister. After eight years John will be 18 years old. How old is he right now.

 Jun 10, 2021
 #1
avatar+785 
+1

Let John's age be $J$

Let his sister's age be $S$

$J = 10S$

$J + 8 = 18$

$J = \boxed{10}$

 Jun 10, 2021
 #2
avatar
+1

Is something missing here?      in 8 years John will be 18......   so he is 10 now .

 Jun 10, 2021
 #3
avatar+25 
+1

Let John's age be $j$

Let John's sister be $s$

 

$10s = j$

$j + 8 = 18$

 

John is currently 10 years old right now. His sister is 1 year old.

 Jun 10, 2021

34 Online Users

avatar