There are 70 cookies in a box. The number of raisin cookies was 1/4 the number of plain cookies. Josephine ate 3 raisin cookies and 3 plain cookies. Find the difference between the number of raisin and plain cookies in the box in the end.
Number of raisin cookies originally = 1 / ( 1 + 4) * 70 = (1/5) 70 = 14
Number of plain = 70 -14 = 56
So
(56 - 3) - (14 - 3) =
53 - 11 =
42
Notice that this is the same difference as 56 -14
+197 
