Maria tiene 24 años y su edad es el doble de la que tenía Ana cuando Maria tenia la edad que ahora tiene Ana. ¿Cuántos años tiene Ana?
O 21
0 15
O 9
O 17
O 18​

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?