Voy a mi pueblo a una velocidad constante de 110 km/h. Vuelvo de mi pueblo a una velocidad constante de 90 km/h.

¿Cuál ha sido la velocidad media del trayecto?

Ineed with number 6 , explain how to get 1978

There are 3232 forwards and 8080 guards in leo's basketball league. leo must include all players on a team and wants each team to have the same number of forwards and the same number of guards. if leo creates the greatest number of teams possible, how many guards will be on each team?

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.