Look, 25 points y'all
this is a logic-math combo question that was from my 5th grade math book (singapore math). just for fun. i never solved it on my own. must show all work
there are 4 single digit whole numbers represented by a, b, c, d. they are all different numbers.
when you multiply abcd with d, you get dcba
solve for the values of a, b,c, and d
(note: if a=2,b=3,c=4,d=5 then abcd=2,345, but that is not the solution)
show all work and do not copy

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.