CALCULATE HOW LONG IT TAKES TO TRAVEL A DISTANCE OF 6KM AT A SPEED OF 90KM/H?

T = speed/distance
= 6km/90km/h = 6/90 hours

There are 60 minutes in an hour, so

6/90 hours * 60 min/hour = 360/90 minutes = 4 minutes

= 60(6/90)
= 60(1/15)
= 60/15 or 4

Answer: 4 minutes

Proof (in hrs):
= 6 km/90 kph
= 1/15 hr

Proof (in minutes):
= 60 minutes (1/15 hr)
= 60/15 minutes or 4 minutes

Distance traveled in km:
= 4 minutes(90 kph)
= 4/60 hr(90 kph)
= 1/15 hr(90 kph)
= 90/15 km or 6 km

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6/90 hour
= 1/15 hour

1/15 hour
= (1 x 4)/(15 x 4) hour
= 4/60 hour
= 4 minutes

t = 6 / 90 h

t = 360 / 90 min

t = 4 min

You just repeated your question ... what was the point ?

speed = distance / time

time = distance / speed

= 6 km/ 90 km/h

= 0.066666 hours

= 4 minutes

t = d/s
=6/90
=1/15hrs
t = 4 mins

4 Minutes.

http://www.1728.com/velocity.htm

4 min.... is this our test ?

Around 2 minutes