Elise walked a total of 18 kilometers by making 9 trips to school. After 10 trips to school, how many kilometers will Elise have walked in total?

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Answer 1 · 2018-03-24T16:26:57

#color(purple)(=20km)#

#18# #km# #-:# #9# #"trips"#

#=# #2# #km# #"per trip to school"#

#"Now that we know that Elise walks 2 km to walk to school, we multiply that by 10"#

#2# #km# * #10# #trips#

#=# #20# #km#

#:.# #color(purple)"Elise walked 20 km in total"#

Answer 2 · 2018-03-24T22:03:52

This is the same as the other answer. It just looks different.

#20" Km"#

Using ratio but in fraction format.

#("distance walked in Km")/("trip count") -> 18/9#

Let the unknown distance be represented by #x#

#("distance walked in Km")/("trip count") ->18/9-=x/10#

Multiply both sides by 10

#x=10xx18/9#

#x=10xx2 = 20#

#20 " Km"#