Question

14. A car covers four successive 3 km stretches at speeds of 10 kmph, 20 kmph, 30 kmph and 60 kmph
respectively. What is average speed over this distance?
​

Answer 1

Answer:

Averagespeed=totaltimetotaldistance and time=speeddistance

total distance = 4×3=12

total time = 103+203+303+603=6036 hr

speed =3612×60=20  kmph

Answer 2

Answer:

123km

Step-by-step explanation:

123

km

..

.

.

.

.

tyggu