The average velocity of 25 taxis is 40 km/hr and the average velocity of 35 trucks is 30 km/hr. Find the combined average velocity of both types of vehicles. ( based on combined mean )
Answers
Answer:
22km/h-1
Step-by-step explanation:
Total distance travelled S=S
1
+S
2
=50km+60km=110km
Total time t=t
1
+t
2
t=
v
1
s
1
+
v
2
s
2
=
25
50
+
20
60
=5 h
Average velocity =
Total time of journey t
Total distance travelled S
=
5h
110km
=22 kmh
−1
Answer:
34.16 km/hr
Step-by-step explanation:
Solution:
Average velocity of 25 taxies = 40 km/hr
Total velocity of 25 taxies = (40 × 25) km/hr
= 1000 km/hr
Average velocity of 35 trucks = 30 km/hr
Total velocity of 35 trucks = (30 × 35) km/hr
= 1050 km/hr
Total velocity of 60 taxies and trucks
= (1000 + 1050) km/hr
= 2050 km/hr
therefore, sigma x = 2050 km/hr
N = 25 + 35
= 60
(x bar) = sigma x ÷ N
= (2050 ÷ 60) km/hr
= 34.16 km/hr
thus, the combined average velocity of both types of vehicles = 34.16 km/hr.