Answer:
45.3 miles per hour
Explanation:
1 hour=60 minutes
60/3=20
20*2=40
----------------------------
30 1/5=151/5
(151/5)/40=x/60
cross product
40*x=(151/5)*60
40x=9060/5
40x=1812
x=1812/40
x=45.3
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