I am trying to solve the following elementary stats question, but am not sure how:

"10 values were taken to calculate the mean of 'A', and 10 separate values were taken to calculate the mean of 'B':

mean A = 73.5 (standard deviation 6.3)

mean B = 12.7 (standard deviation 2.7)

Calculate A/B, as well as giving 95% confidence limits on this value"

Any help would be hugely appreciated!