Question

Question 1
Bob drove from City P to City Q. He traveled the first 36km at an average speed of 54km/h. He traveled the remaining 96km at a average speed of 72km/h. Find his average speed for the whole trip.
Answer: km/h.

Question 2
John drove from Town A to Town B in 5 hours. His average speed for the first 3.5 hours was 64km/h. His average speed for the last 1.5 hours was 60km/h. What was the total distance he traveled? 
Answer: km.

Question 3
A car traveled at 50km/h for 2 hours and at 60km/h for 3 hours. What is the car’s average speed?
Answer: km/h

 

Answer 1

Question 1:66 km/h

Question 2:314 km

Question 3:200/9 km/h

Answer 2

Question 1:66 km/h

Question 2:314 km

Question 3:56 km/h

Answer 3

56km/h

Answer 4

câu 2 ; 314 km/h

câu 3 ; 66km/h

Answer 5

please k for me 

Answer 6

k cho tớ nhé

Answer 7

mình cần cách giải rõ của câu 1. có bạn nào giúp mình ko