a GST form is either filed on time or late, is either from a small or a large business, and is either accurate or inaccurate. There is 11% probability that a form is from a small business and is accurate and on time . There is a 13% probability that a form is from a small business and is accurate but is late. There is a 15% probability that a form is from a small business and is on time . There is a 21% probability that a form is from a small business and is inaccurate and is late ..
if the form is from small business and is accurate , what is the probability that it was field on time ?