Jordan drives to the store at 30 miles per hour. On her way home she averages only 20 miles per hour. If the total driving time
takes half an hour how far does she live from the store?
1 answer:
Answer:
Jordan lives 18 miles away from the store
Step-by-step explanation:
Distance=speed × time
Where,
d= distance
s= speed
t= time
Total driving time takes half an hour
Distance=speed × time
time=Distance/speed
t=1.5
Speed 1=30 mph
Speed 2:=20 mph
t=d/s1 + d/s2
1.5=d/30 + d/20
1.5=20d + 30d / 600
1.5=50d/600
Cross product
1.5×600=50d
900=50d
Divide both sides by 50
900/50=d
18=d
Therefore,
d=18 miles
Jordan lives 18 miles away from the store
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