Ocho amigos fueron al cine. ellos pagaron en total 78 soles por sus entradas, incluyendo 2 gaseosas. si una entrada al cine cuesta lo mismo que 3 gaseosas, ¿cuantos soles cuesta una entrada al cine? ayuda necesito para mi tarea: )

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?