in connecticut state championships, rodrigo runs 1 mile race four different times. he finished with times of a minutes, b minutes, c minutes, and d minutes. what was his average speed, in miles per hour, for all four races combined?

a. (a+b+c+d)/4
b.(a+b+c+d)/240
c. (a+b+c+d)/15
d. 4/(a+b+c+d)
e. 240/ (a+b+c+d)

Question

in connecticut state championships, rodrigo runs 1 mile race four different times. he finished with times of a minutes, b minutes, c minutes, and d minutes. what was his average speed, in miles per hour, for all four races combined? 

a. (a+b+c+d)/4
b.(a+b+c+d)/240
c. (a+b+c+d)/15
d. 4/(a+b+c+d)
e. 240/ (a+b+c+d)

ganeshie8 · Answer

speed =  distance/time

ganeshie8 · Answer

...rodrigo runs 1 mile race four different times.

ganeshie8 · Answer

whats the total distance he travelled ?

anonymous · Answer

1 mile

ganeshie8 · Answer

yes, he travelled 1 mile FOUR different times,
so he travelled a total distance of "4 miles" right ?

anonymous · Answer

yes

ganeshie8 · Answer

good, wat about the time ?
how much time he took to travel that 4 miles ?

anonymous · Answer

a+b+c+d

ganeshie8 · Answer

Correct ! plug them in speed formula

ganeshie8 · Answer

speed =  distance/time
           =  ?

anonymous · Answer

4/(a+b+c+d)

ganeshie8 · Answer

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