Question 221219
Remember  velocity = Distance / Time,,,or v=d/t,,,or  t= d/v,,,or d=v*t
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v= 4 miles / (30 min * 1hr / 60 min )= 8  mph
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d= (18 min * 1 hr/60min) * 8 mph = 2.4 miles
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check,,,,,4mi/ x = 30 min/ 18,,,,4*18/30 = 2.4,,,,ok
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