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MrRa [10]
3 years ago
15

What is the average speed that robin mus drive to reach her friend's house 170 miles away in 2 1/2 hr

Mathematics
2 answers:
galina1969 [7]3 years ago
7 0

v = d \div t
v = (170  \: mi \times 1.609 \: km) \div 2.5 \: hrs
v = 273.53 \:  km \div 2.5 \: hrs
v = 109.412 \: kmhr - 1
The average speed is 109.412 kilometers per hour.
Tamiku [17]3 years ago
4 0

68 miles / hour

Average speed = distance / time

distance = 170 and time = 5/2 ( as an improper fraction)

speed = 170 ÷ \frac{5}{2} = 170 × \frac{2}{5} = \frac{340}{5} = 68

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