If y was the total number of eggs and x is the daily sale. Then, Left over egg on day 1=y−x Left over egg on day 2=2(y−x)−x=2y−3x Left over egg on day 3=3(2y−3x)−x =6y−10x Left over egg on day 4=4(6y−10x)−x =24y−41x Left over egg or say total eqgs on day 5 =5(24y−41x)=x ⇒120y−205x=x ⇒120y=206x ⇒60y=103x ⇒y=103 and x=60 as minimum values.