
Can someone please help with this question?
Can someone please help with this question?
Concept: Distance = Speed x time
If the distance is unknown, can assume it to be 1; hence, the speed will be 1/time.
Answer:
Every hour,
As they are travelling towards each other, the distance they travel together per hour is
1/6 + 1/4 = 2/12 + 3/12 = 5/12
Assume it takes n hours for them to meet, i.e. they complete the journey jointly,
n × 5/12 = 1
n = 12/5
12/5 hour = 60 × 12/5 min = 144 min = 2 hours 24 minutes
2 hours 24 minutes after 10 a.m. is 12 p.m. 24 minutes