if two projectiles are launched at the same moment from 2520 km apart and travel directly towards each other at 432 km per hour and 576 km per hour respectively , how many minutes will it take for them to meet ?
"the projectiles travel a total of 1008 km per hour . the time to meet is 2520 / 1008 = 2.5 hours = 150 minutes the answer is e ."
multiply(divide(2520, add(432, 576)), const_60)