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27. A hot-air balloon 70 meters above the ground is falling
at a constant rate of 6 meters per second while another
hot-air balloon 10 meters above the ground is rising at
a constant rate of 15 meters per second. To the nearest
tenth of a second, after how many seconds will the
2 balloons be the same height above the ground?

  • A. 8.9

  • B. 6.7

  • C. 2.9

  • D. 0.4

  • E. 0.2