Stmt1: the cable company installed three cable outlets in the Horace Family home.
So 30 + 3(20)= 90. Sufficient,
Stmt2: the amount that the cable company charged the Horace family for installing the Cable television in their home was equivalent to an average charge of $30 per cable installed.
Let the cable company installed "x" cable outlets in the Horace Family home.
So total= 30 +x(20)
Average of total amount = 30+x(20) / x = 30
Total amount = 30 + 3(20) = 90 Sufficient,
My dad once said to me: Son, nothing succeeds like success.