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OpenStudy (anonymous):
Do you think someone could explain this to me please? I'll give you a medal xD If the car went 30 km west in 25 min. and then 40 km south in 35 min., what would be its average speed?
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OpenStudy (aaronq):
\(\sf average ~speed=\dfrac{distance ~travelled}{time}\) \(\sf average ~speed=\dfrac{(30+40)~km}{(25+35)min}\)
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