The length of a side and the corresponding height of a triangle are (x + 3) cm and (2x – 5) cm respectively. Given that the area of triangle is 20 cm2, find the value of x.

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?