Andrew jogs at an average speed of 5.5 miles per hour. he is planning a jog for saturday morning. how far can andrew go on his jog? write an equation for the problem and use the equation to answer the question.

Let

x> the time in hours

y> the distance in miles

we know that

speed=distance/time> speed=y/x> equation 1

speed=5.5 miles/hour> equation 2

equate equation 1 and equation 2

y/x=5.5> y=5.5*x> this is the equation for the problem

  the distance that Andrew jogs will depend on the time spent

examples

a) if he runs for 2 hours,

then  

x=2 hours

y=5.5*2> y=11 miles          

b) if he runs for 3 hours,

then  

x=3 hours

y=5.5*3> y=16.5 miles        

c) if he runs for 30 minutes

then  

30 minutes=0.5 hours

x=0.5 hours

y=5.5*0.5> y=2.75 miles        

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

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