3 years ago

9. A car has an average speed of 80 km/h for one hour, then an

1 answer:

dsp733 years ago

7 0

Answer:

86.67 km/hr

Step-by-step explanation:

First Hour: (80 km/hr)(1 hr) = 80 km

Next two hours: (90 km/hr)(2 hr) = 180 km

Total distance traveled: = 260 km

Average speed: total distance / total time elapsed) = 260 km / 3 hr

= 86.67 km/hr

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