From Pardubice

Mrs. Černá left Pardubice and rode to Rychnov nad Kněžnou at an average speed of 60 km/h. At the same time, Dáša rode her bicycle from Rychnov nad Kněžnou and rode to Pardubice at an average speed of 25 km/h. The place on the road where they passed was 10 km from Ryhnov n. K. Determine the road distance between the two cities.

Correct answer:

s =  34 km

Step-by-step explanation:


60t + 25t = s
25t = 10

60·t + 25·t = s
25·t = 10

s-85t = 0
25t = 10


t = 10/25 = 0.4
s = 0+85t = 0+85 · 0.4 = 34

s = 34
t = 2/5 = 0.4

Our linear equations calculator calculates it.



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