Below is an instruction that describes a task. Write a response that appropriately completes the request in French. Please answer in French.

### Instruction:
 Brenda volunteered to make 3 trays of banana pudding for the family reunion. Each tray of banana pudding would need 80 wafer cookies. A box of wafer cookies only had 60 cookies per box. Each box costs $3.50. How much will it cost her to buy just enough boxes for 3 trays of banana pudding?


### Response:
 Chaque plateau a besoin de 80 cookies et elle en fait 3, donc 8*3 = <<80*3=240>>240.
Chaque boîte de cookies a 60 cookies. Elle a besoin de 240 cookies, donc 240/60 = <<240/60=4>>4 boîtes.
Les boîtes coûtent 3,50 $ chacune et elle a besoin de 4 boîtes, donc 3,50*4 = 14,00 $.