juan paul david y andrea van a correra un parque todos los dias. juan le da una vuelta al parque en 2 minutos, paul le da 3 vueltas al parque en 7 minutos con 30 segundos, david le da 4 vuetas en 9 minutos con 20 segundos y andres le da 2 vueltas en 4 minutos con 20 segundos. ¿quines el mas veloz?¿cuanto tardarian todos en encontrarse en el punto de partida?

(50 ) mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.