Let a be the number of trumpet players Let b be the number of saxophone players --------------------- (1) a = b-10 (2) b =3a ---------------- Substitute (2) into (1) (1) a =3a-10 (1) 2a =10
(1) a = 5and (2) b = 3(5)(2) b = 15 ------------------ There are 5 trumpet players and 15 saxophone player
