Answer:
mrs wong made 400 pies she sold 3/5 of them in the morning and 1/4 of the rest in the afternoon how many pies did she sell in the afternoon.
in the morning she sold (400*3)/5=240 pies
he has 400-240=160 pies left
1/4 of the rest in the afternoon = 160/4 = 40
in the afternoon she sold 40 pies