Item 16 an indoor water park has two giant buckets that slowly fill with 1000 gallons of water before dumping it on the people below. one bucket dumps water every 18 minutes. the other bucket dumps water every 21 minutes. it is currently 1: 15 p. m. and both buckets dumped water 5 minutes ago. find the next two times that both buckets dump water at the same time. item 16 an indoor water park has two giant buckets that slowly fill with 1000 gallons of water before dumping it on the people below. one bucket dumps water every 18 minutes. the other bucket dumps water every 21 minutes. it is currently 1: 15 p. m. and both buckets dumped water 5 minutes ago. find the next two times that both buckets dump water at the same time.

(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.