Answer:
A: 340
Step-by-step explanation:
If there are five busses and 70 seats with two seats taken on two busses the steps are.
1. 5x70=350 this means there are 350 seats on the buses.
2. 5x2=10 this means there are 10 seats taken by the teachers.
3. 350-10=340 this means there are 340 available seats.
Answer: A: 340