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

Guest Jun 10, 2021

#1**+1 **

Let John's age be $J$

Let his sister's age be $S$

$J = 10S$

$J + 8 = 18$

$J = \boxed{10}$

MathProblemSolver101 Jun 10, 2021

#3**+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.

angelxbobaa Jun 10, 2021