The $80/20$ rule suggests that

Multiple Choice

$80$ percent of a firm$$s marketing program expenses are tax deductible while $20$ percent are not.

around $80$ percent of a firm$$s inventory should be readily available while $20$ percent should be reserved for emergency demand.

about $80$ percent of a firm$$s products will be sold to ultimate consumers while $20$ percent goes to organizational buyers.

about $80$ percent of a firm$$s sales are obtained from about $20$ percent of its customers.

nearly $80$ percent of a firm$$s first$-$time users will become brand loyal while $20$ percent will use the product only once and then abandon it$.$