Can someone help me with?? −1(4/5)-Pleasee?

Renita analyzed two dot plots showing the snowfall during the winter months for city a and for city b. she found that the median snowfall is 5 inches less in city a than in city b. the mean snowfall is about 2 inches less in city a than in city b. which explains why there is a difference in the measures of center for the sets of data?

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

The sum of two numbers is 12 and their difference is 18 what are the two numbers