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Given the distance between the lauch sites of missiles = 1320 miles
The speed of two missiles will add up as they are travelling towards each other = 510+480 = 990 miles per hour
Hence time = Distance / speed
Sub will give 4/3 hour = 80 min (Option C)
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Hello,
If two projectiles are launched at the same moment from 1320 miles apart and travel directly towards each other at 480 miles per hour and 510 miles per hour, respectively, how many minutes will it take for them to meet?

This can solve by relative speed
t=1320/(480+510)=1.33 hours
1.33*60=80 minutes
Hence Option C is correct
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