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If it takes me 20 minutes to walk 1,408 yards and I have to walk 0.5 miles from my house to get to the bus stop and the bus is scheduled to get to the bus stop at 12:11pm, what time should I leave my house if I want to get to the bus stop 10 minutes before the bus is scheduled to get to the bus stop?  Please show how you get to your answer.

 Dec 17, 2016
 #1
avatar+128407 
+7

1 mile = 1760 yds....so 0.5 mile  =  880 yds

 

So....we can use a proportion to find out how long - in x minutes - it will take you to walk 880 yds

 

20 / 1408  =   x / 880      cross-multiply

 

880 * 20  = 1408 * x

 

17600  = 1408 * x       divide both sides by 1408

 

12.5 min  =  x = time to walk  0.5 miles

 

Since you want to get there 10 min early,  you need to be there at 12:01

 

And 12.5 min before this =  11:48: 30 AM  is the time you should leave your house

 

 

cool cool cool

 Dec 17, 2016

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