There were some chikoos, mangoes and mangosteens. The number of chikoos was five times the number of mangoes. The total number of chikoos and mangoes was one-quarter of the number of mangosteens. There were 150 fruits altogether. All the mangosteens were sold at 8 for $9. How much money was collected from the sale of the mangosteens?
Number of mangoes = 1 u
Number of chikoos = 5 u

Total number of mangoes and chikoos
= 1 u + 5 u
= 6 u

Number of mangosteens
= 4 x 6 u
= 24 u

Total number of fruits
= 1 u + 5 u + 24 u
= 30 u

30 u = 150

1 u = 150 ÷ 30 = 5

Number of mangosteens sold
= 24 u
= 24 x 5
= 120

Number of sets of 8 mangosteens
= 120 ÷ 8
= 15

Amount collected from the sale of mangosteens
= 15 x 9
= $135

Answer(s): $135