Jamina drove for 2 hours at an average speed of 40km/h. She then drove for 3 hours at an average speed of 50km/h. What was her a verage speed for the whole journey?
1 answer:
Remark
Average Speed = Total distance divided by total time.
Total Time
2 hours + 3 hours = 5 hours. The total time is 5 hours.
Total Distance
d = rate * time
d1 = 40 km/hour * 2 hours = 80 km
d2 = 50 km/hour * 3 hours = 150 km
d = d1 + d2
d = 80 + 150 = 230 km
Average Speed
Av = Total distance / Total Time = 230 / 5 = 46 km/hr
You might be interested in
Answer:
the answer shoudl be OB 4
Answer:
0.58333333333
Simplify is 0.6
Step-by-step explanation:
i think
Answer: 416 mm
Step-by-step explanation: The equation for the volume of a rectangular prism is length*width*height. The width (5) times the height (8) is 40 (5*8=40). The volume is that (40) times the length(10.4) which is 416 (40*10.4=416).
Answer:
4:6
Step-by-step explanation:
because 2 is common factor of 8 and 12 so 8 divided by 2 equal 4 and 12 divided by 2 equals 6
Answer:
11.89
Step-by-step explanation:
