Asked by river
sam and nikki lie 206 km apart. at 8:00 am. sam started driving to nikki's house at 60km/hr. at 10:00 am nikki started driving to sam's house at 82 km/hr. at what time will they be 15 km apart?
Answers
Answered by
Reiny
let the time driven by Sam be t hrs
let the time driven by Nikki be t-4 hrs
distance covered by Sam is 60t
distance covered by Nikki is 82(t-4)
60t + 15 +82(t-4) = 206
142t = 206 - 15 + 328
142t = 519
t = 3.655 hrs = 3 hrs and 39 minutes
so they will 15 km apart at 8:00 + 3:39
or at 11:39 am
let the time driven by Nikki be t-4 hrs
distance covered by Sam is 60t
distance covered by Nikki is 82(t-4)
60t + 15 +82(t-4) = 206
142t = 206 - 15 + 328
142t = 519
t = 3.655 hrs = 3 hrs and 39 minutes
so they will 15 km apart at 8:00 + 3:39
or at 11:39 am
Answered by
river
thank you
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.