Resuelve la situación presentada gràficamente y simbòlicamente. En una reunión 6 amigos comieron 2 ½ pizzas de manera equitativa. ¿Qué parte del total comió cada uno?

How do i do this activity, is appreciated

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Ten times the square of a non-zero number is eqaul to ninety times the number