A cuatro litros de una solución al 60% se agregan 16 litros de otra solución para obtener 20 litros de solución al 72%. ¿cuál es la concentración de la segunda solución? problemas de mezclas con porcentajes

Adice is rolled 5 times. how many possible rolls are there? ( determine the number of outcomes using only the fundamental counting principal )

What is the measure of one interior angle of a pentagon

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?