Math question about fractions

Question

David is 56 4/5 inches tall. Dwight is 1 1/6 inches taller than David and Jane is 1 1/3 inches taller than Dwight. How tall is Jane? How to solve this problem?

Answer 1

54 4/5 + 1 1/6 + 1 1/3 = 56 +(4/5+1/6+1/3)

put the fractions over a common denominator, 30, and add the numerators

= 56 +(24+5+10)/30= 56 + 39/30 = 57 9/30 = 57 3/10= 57.3

Jane is 57.3 inches tall