Respuesta :
2f+10=36 Each friend gets two candy bars (2f) and there are 10 spare bars (10). If the total is 36, then he can only treat 13 friends.
Let F be the number of friends.
He wants to give out 2F bars and have 10 left and he has 16 bars so the expression is:-
2F + 10 = 36
now he can solve for F to find the number of friends he can treat.
2F=36-10
F=26/2
F=13