There were some starfruits, persimmons and chikoos. The number of starfruits was three times the number of persimmons. The total number of starfruits and persimmons was one-third of the number of chikoos. There were 160 fruits altogether. All the chikoos were sold at 5 for $9. How much money was collected from the sale of the chikoos?
Number of persimmons = 1 u
Number of starfruits = 3 u

Total number of persimmons and starfruits
= 1 u + 3 u
= 4 u

Number of chikoos
= 3 x 4 u
= 12 u

Total number of fruits
= 1 u + 3 u + 12 u
= 16 u

16 u = 160

1 u = 160 ÷ 16 = 10

Number of chikoos sold
= 12 u
= 12 x 10
= 120

Number of sets of 5 chikoos
= 120 ÷ 5
= 24

Amount collected from the sale of chikoos
= 24 x 9
= $216

Answer(s): $216