Answer:
15 3/10 years
Step-by-step explanation:
Ballio age = 12 4/5
Bill's age = Ballio's age + 1 1/6
Bills age = 12 4/5 + 1 1/6 = 64/5 + 7/6 = (384 + 35) / 30 = 419 / 30 = 13 29/30
Jane's age :
13 29/30 + 1 1/3
419 / 30 + 4 /3 = (419 + 40) / 30 = 459 / 30 = 15 9/30
15 9/30 = 15 3/10 years
