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miho drove 270 miles in 4.5 hours ..what is her average rate of speed.? \
A:45
B:50
C:60
D:67.5


Sagot :

270:4.5=60 miles at hours
Answer: C:60
4,5 h......................270 miles
1 h.........................x miles
x=270:4,5
x=60 miles/h

Answer: C.