Answer:
840 km
Step-by-step explanation:
The speed expression ...
840 kilometers per hour
means the plane files 840 kilometers in each hour.
In 1 hour, it will travel 840 km.
The answer is 101 and 102.
101 and 102 are back to back and 101+102=203
Answer:
Step-by-step explanation:
1st year- 7*3=21
2nd year- 21*3=63