madisonmoore9716
27.06.2019 •
Mathematics
Acar travels 34 km in 0.5 hr, then 15 km in 0.2 hr. what is the average speed
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Ответ:
Average speed = 71.5km/hr
Step-by-step explanation:
1st = 34km in 0.5hr = 34/0.5 = 68 km/hr
2nd = 15km in 0.2hr = 15/0.2 = 75 km/hr
Average speed= 68 + 75/2
= 71.5 km/hr
Ответ: