Two Spaceships Approach Earth from the Same Direction.

Question 55
Multiple Choice

Two spaceships approach Earth from the same direction.One has a speed of 0.21c and the other a speed of 0.34c,both relative to Earth.What is the speed of one spaceship relative to the other? A)0.13c B)0.14c C)0.15c D)0.16c E)0.18c