Help? Really confused!
Two children own two-way radios that have a maximum range of 4 miles. One leaves a certain point at 1:00 P.M., walking due north at a rate of 6 mi/hr. The other leaves the same point at 1:15 P.M., traveling due south at 9 mi/hr. For how many minutes after 1:00 P.M. will they be able to communicate with one another? (Round your answer to the nearest minute.)

Question

Help? Really confused! 
Two children own two-way radios that have a maximum range of 4 miles. One leaves a certain point at 1:00 P.M., walking due north at a rate of 6 mi/hr. The other leaves the same point at 1:15 P.M., traveling due south at 9 mi/hr. For how many minutes after 1:00 P.M. will they be able to communicate with one another? (Round your answer to the nearest minute.)

anonymous · Answer

find the distance travelled by both the boys

anonymous · Answer

then check how far they are from each other after 15 minutes

anonymous · Answer

I don't even know how to do that

anonymous · Answer

distance =speed .time

anonymous · Answer

i think the ans is 25 mins

anonymous · Answer

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