Answer:
105.
Step-by-step explanation:
7rows × 20seats = 140seats total
7rows × 5seats = 35seats reserved
140total - 35reserved = 105open
The answer is 105.
To find this we know that there a 7 rows of 20 seats (7 times 20) or 140 seats.
We also know that each row have 5 reserved seats (5*7) or 35 seats.
Now all we have to do is subtract. 140 - 35 = 105
