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

$x=10xx18/9$

$x=10xx2 = 20$

$20 " Km"$