If two projectiles are launched at the same moment from 1998 km apart and travel directly towards each other at 444 km per hour and 555 km per hour respectively, how many minutes will it take for them to meet?	Choose one
A) 90
B) 100
C) 110
D) 120
E) 130
The projectiles travel a total of 999 km per hour.   The time to meet is   1998/999= 
<gadget id="calculator">  1998/999</gadget>
<output>2</output>
2 hours= 120 minutes   The answer is 120.
<result>D</result>
If two projectiles are launched at the same moment from 1998 km apart and travel directly towards each other at 444 km per hour and 555 km per hour respectively, how many minutes will it take for them to meet?