Mrs Yap baked some croissants of three flavours, which were apple, vanilla and banana. She baked twice as many apple croissants as vanilla croissants and twice as many banana croissants as apple croissant. Given that she baked 60 more banana croissants than vanilla croissants, how many croissants did she bake?
Number of vanilla croissants = 1 u
Number of apple croissants = 2 u
Number of banana croissants = 2 x 2 u = 4 u

Number of more banana croissants than vanilla croissants
= 4 u - 1 u 
= 3 u

3 u = 60

1 u = 60 ÷ 3 = 20

Number of apple croissants
= 2 u
= 2 x 20
= 40

Number of banana croissants
= 4 u
= 4 x 20
= 80

Total number of croissants that he baked
= 20 + 40 + 80
= 140

Answer(s): 140