A total of 145 tickets were sold to a film showing bringing in a total of $1,153. Two types of tickets were sold: adult tickets were sold for $9.00 each and child tickets were sold for $5.00 each. How many adult tickets were sold

Respuesta :

Supposing all were child tickets:
145x$5=$725
$1153-$725=$428 (diff. between above price and  original price)
$9-$5=$4 (diff. between adult price and child price)
$428÷$4=107 (no. of adult tickets)

Ans: 107