Mrs Seow baked some croissants of three flavours, which were apple, apricot and cherry. She baked thrice as many apple croissants as apricot croissants and thrice as many cherry croissants as apple croissant. Given that she baked 72 more cherry croissants than apricot croissants, how many croissants did she bake?
Number of apricot croissants = 1 u
Number of apple croissants = 3 u
Number of cherry croissants = 3 x 3 u = 9 u

Number of more cherry croissants than apricot croissants
= 9 u - 1 u 
= 8 u

8 u = 72

1 u = 72 ÷ 8 = 9

Number of apple croissants
= 3 u
= 3 x 9
= 27

Number of cherry croissants
= 9 u
= 9 x 9
= 81

Total number of croissants that he baked
= 9 + 27 + 81
= 117

Answer(s): 117