+0

# help

0
76
2

A car travels 180 km from A to B at 60 kph, and returns from B to A along the same route at 90 kph.  What is the average speed of the round trip?

Jun 8, 2020

#1
+131
+5

A-----------------------B

0 ---------------------- 180

The trip from A to B took him 3 hrs

The trip from B to A took 2hrs.

$$\frac52$$ = 2.5

Jun 9, 2020
#2
+26620
+1

Well we know from Guest that total time was 5 hours

total distance was 180 + 180 = 360 km

Avg speed =   360km/5hr = .........    km/hr

Jun 9, 2020