You are leaving for a party at your cousin’s house in a city that is 150 km away. You will travel at an average rate of 50 km/hr. How long will it take you to arrive?
hours
If you need to be at the party in 2.5 hours, how fast would you need to drive to get there?
km/hr
Answers
Answered by
25
GIVEN:
Speed = 50km/hr
Distance = 150km
TO FIND: time
S=D/t => t= D/S
t= 150/50 = 3 hrs
Now, if t=2.5hrs
Speed =?
=> S=D/t
=> S= 150/2.5 = 60 km/hr
Hence, you need to drive 10km/hr faster to get there
Speed = 50km/hr
Distance = 150km
TO FIND: time
S=D/t => t= D/S
t= 150/50 = 3 hrs
Now, if t=2.5hrs
Speed =?
=> S=D/t
=> S= 150/2.5 = 60 km/hr
Hence, you need to drive 10km/hr faster to get there
Answered by
10
Given: Distance between your and your cousin's house = 150 km
Average speed = 50 km/h
Time limit given to reach cousin's house = 2.5 hours
Initial speed = 50 km/h
To find: The speed at which you will travel to reach in 2.5 hours
Solution: According to the given question,
We need to calculate the speed at which you can cover the distance of 150 km in 2.5 hours
Using Speed formula:
.: Speed =
Distance = 150 km and Time = 2.5 hours
Speed =
= (Removed decimal from 2.5 and added one 0 to 150)
Speed = 60 Km/h
Hence, you need to travel at 60 km/h to cover 150 km distance to your cousin's house in 2.5 hours.
i.e., Increase the speed by 10 km/h.
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