Four runners ran a combined total of 195 miles last week. Katarina ran 51 miles. Tomas, Tyler, and Harriet all ran the same distance. How many miles did Harriet run?
195 - 51 = 144 = miles the 3 runners ran
144/3 = <<144/3=48>>48 miles
Harriet ran <<48=48>>48 miles.
#### 48