There were some starfruits, pears and chikoos. The number of starfruits was three times the number of pears. The total number of starfruits and pears was half of the number of chikoos. There were 168 fruits altogether. All the chikoos were sold at 4 for $7. How much money was collected from the sale of the chikoos?
Number of pears = 1 u
Number of starfruits = 3 u

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

Number of chikoos
= 2 x 4 u
= 8 u

Total number of fruits
= 1 u + 3 u + 8 u
= 12 u

12 u = 168

1 u = 168 ÷ 12 = 14

Number of chikoos sold
= 8 u
= 8 x 14
= 112

Number of sets of 4 chikoos
= 112 ÷ 4
= 28

Amount collected from the sale of chikoos
= 28 x 7
= $196

Answer(s): $196