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# how long will it take to drive 410 miles you drive at a rate of 120 h/km and you make two different stops both of which were 15 minutes long?

how long will it take to drive 410 miles form Wolf Point to Helena given the following conditions you drive at a rate of 120 hourly and you make two different stops both of which were 15 minutes long?

time=distance/speed

if speed is given in ml per hour then:

time=410/120=3.417 hours=3 hours 25 min

plus half an hour totally for stops.

total time will be 3 hours 55 min.

if speed is given in km per hour you have to convert to ml per hour 1st:

1 km = 0.62 ml

120 km/hr = 120*0.62 ml/hr.

then follow the same strategy =)

The first thing to notice about this problem is that you have a mixture of Metric and English units.  The first thing that I would recommend is to convert 410 miles into Kilometers

1 mile = 1.61 km

410 miles = (410*1.61) = 660 km (rounded to the nearest km)

Now you need to know the time.  The formula for travel is d=rt.  You know the distance, and you know the rate, solve the formula for time.

t=d/r.

t=660km/120km/k

t=5.5 hours.  Plus add the 2 15 minutes breaks.  2*15=30 minutes.  60 minutes in an hour means that you add 30/60 hours to the trip, or another .5 hours.

Therefore the answer is 5.5+.5 hours.

The answer is: time=6 hours.

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