In the same amount of time, James drove twice as far as Roger. Altogether, James and Roger drove 90km. Find the number of kilometres driven by each person.

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Me n o w. i need t h i s. 10 points

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.