Question

please anyone answer this for me?
sarah and Tara can complete their case loads together in 8 hours. if sarah did it by herself, it would take her 20 hours. how long would it take Tara by herself​

Answer 1

im not sure but

(sarah + tara)/2 = 8

(20 + tara)/2 = 8

20 + tara = 16

tara = 4hours ?? it doesn’t make logical sense but this is the only way i can think of

sorry if this wasn’t helpful ;-;