How do you do this problem when jose and sean were each 5 years old, jose was 1 1/2 inches taller than sean. jose grew at an average rate of 2 3/4 inches per year from the time that he was 5 years old until the time he was 13 years old. joes was 63 inches tall when he was 13 years old. how tall was sean when he was 5 years old?