There were some pomegranates, mangoes and mangosteens. The number of pomegranates was two times the number of mangoes. The total number of pomegranates and mangoes was half of the number of mangosteens. There were 162 fruits altogether. All the mangosteens were sold at 4 for $8. How much money was collected from the sale of the mangosteens?
Number of mangoes = 1 u
Number of pomegranates = 2 u

Total number of mangoes and pomegranates
= 1 u + 2 u
= 3 u

Number of mangosteens
= 2 x 3 u
= 6 u

Total number of fruits
= 1 u + 2 u + 6 u
= 9 u

9 u = 162

1 u = 162 ÷ 9 = 18

Number of mangosteens sold
= 6 u
= 6 x 18
= 108

Number of sets of 4 mangosteens
= 108 ÷ 4
= 27

Amount collected from the sale of mangosteens
= 27 x 8
= $216

Answer(s): $216