4÷1/5=20 because A) 20×1/5=4 B) 40×1/10=4 C) 80×1/20=4 D) 100×1/5=20​

Afitness center has 2 membership plans one has a low dollar sign up fee of 15 dollars and costs 38 dollars per month to join. a second plan has a higher sign up fee of 78 dollars but a lower monthly fee of 31 dollars for what number of days of the month is the coat the same