A truck left a station at 6:00am traveling at a rate of 45km/h. A van left the same place 2 hours later heading in the same direction at a rate of 54km/h. At what time will the van catch up with the truck?

6 PM

Step-by-step explanation:

The truck has a 2 hour head start.  It is moving at 45 km/h, so it is 90 km ahead.

If t is the time after 8 AM, then the distance between the truck and the station is:

d = 90 + 45t

The distance between the van and the station is:

d = 54t

When the distances are equal:

54t = 90 + 45t

9t = 90

t = 10

It takes 10 hours after 8 AM for the van to catch up with the truck.  So the time would be 6 PM.

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.