The Dean of Admissions at Mid-Stale University needs student help to process 6,400 application forms. She has found that a new student helper can process 40 forms the first day. The helpers usually achieve an 85% learning rate. The Dean plans to hire ten helpers, so each will process 640 forms. You may consider 40 forms to be a batch.

Required

Determine how many days it will take ten new helpers to process the 6,400 forms.