Two planes start from a city and fly in opposite directions. The average speed of first is 50 km/h more than the second. If they are 2600 km apart after 4 hours, find the sum of their average speeds.

Two planes start from a city and fly in opposite directions. The avera

1.	Two planes start from a city and fly in opposite directions. The average speed of first is 50 km/h more than the second. If they are 2600 km apart after 4 hours, find the sum of their average speeds.
A.	650 km/h
B.	360 km/h
C.	320 km/h
D.	640 km/h
Answer» B. 360 km/h

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Two planes start from a city and fly in opposite directions. The average speed of first is 50 km/h more than the second. If they are 2600 km apart after 4 hours, find the sum of their average speeds.

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