Mrs Choo baked some cookies of three flavours, which were apricot, blueberry and banana. She baked twice as many apricot cookies as blueberry cookies and thrice as many banana cookies as apricot cookie. Given that she baked 85 more banana cookies than blueberry cookies, how many cookies did she bake?
Number of blueberry cookies = 1 u
Number of apricot cookies = 2 u
Number of banana cookies = 3 x 2 u = 6 u

Number of more banana cookies than blueberry cookies
= 6 u - 1 u 
= 5 u

5 u = 85

1 u = 85 ÷ 5 = 17

Number of apricot cookies
= 2 u
= 2 x 17
= 34

Number of banana cookies
= 6 u
= 6 x 17
= 102

Total number of cookies that he baked
= 17 + 34 + 102
= 153

Answer(s): 153