Question 53894
145=4B+5M & 125=2B+5M NOW MULTIPLY THE SECOND EQUATION BY -1 WE GET -125=-2B-5M
NOW WE ADD THESE TWO EQUATIONS

145=4B+5M
-125=-2B-5M 
---------------------
20=2B OR B=20/2 OR B=10 CENTS THEN 145=4*10+5M OR 145=40+5M OR 5M=145-40 OR

5M=105 OR M=105/5 OR 21 CENTS FOR EACH MAGAZINE.