Keith is in a hot air balloon that is 200
feet above the ground and is ascending
1-feet per second. Erica is in a hot air
balloon that is 548 feet above the ground and
is descending 1 feet per second. After how
many seconds will the hot air balloons be the
same number of feet above the ground?
2
5
A. 52 seconds
B. 120 seconds
C. 174 seconds
D. 3,480 seconds
