You manage $20$ workers who store boxes during their warehouse shift:

are novice workers

$8$ are apprentice workers

$7$ are experienced workers

The storage rate for an apprentice worker is $225$ boxes per hour. The storage rate for a novice worker is $25\%$ less than the storage rate for an apprentice worker. The storage rate for an experienced worker is $30\%$ more than the storage rate for an apprentice worker.