Mrs Sofia baked 144 chicken floss buns, some yam buns and some custard buns. The ratio of the number of yam buns to the number of custard buns was 5:4. There were 24 more yam buns than custard buns. What percentage of the buns were chicken floss buns?
Let's denote the number of yam buns as 5x and the number of custard buns as 4x.
According to the question, 5x = 4x + 24
x = 24
Therefore, the number of yam buns is 5(24) = 120 and the number of custard buns is 4(24) = 96.
The total number of buns is 144, so the number of chicken floss buns is 144 - 120 - 96 = 24.
Therefore, the percentage of chicken floss buns is (24/144) x 100% = 16.67%.