How would the distributions change if the difference between the means was the same as the MAD for each distribution?

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

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?