The average number of kiwis in Box R, Box S and Box T is 12 and it is 4 more than the average number of chikoos in the 3 boxes. ¹₆ of the chikoos are in Box R and the chikoos in Box R is 40% of the number of chikoos in Box S. If each box has the same number of fruits, what percentage of the fruits in Box T are kiwis?
Average number of chikoos
= 12 - 4
= 8

Total number of chikoos
= 3 x 8
= 24

Total number of kiwis
= 3 x 12 
= 36

Total number of fruits
= 24 + 36
= 60

Number of fruits in each box
= 60 ÷ 3
= 20

Chikoos in Box R	Chikoos in Box S	Chikoos in Box T	Total chikoos
1x2	5x2		6x2
2x1	5x1
2 u	5 u	5 u	12 u

40% = ⁴⁰₁₀₀ = ²₅

The number of chikoos in Box R is repeated.  Make the number of chikoos in Box R the same.  LCM of 1 and 2 is 2. 

Total number of chikoos
= 2 u + 5 u + 5 u
= 12 u

12 u = 24

1 u = 24 ÷ 12 = 2

Number of chikoos in Box T
= 5 u
= 5 x 2
= 10

Number of kiwis in Box T
= 20 - 10
= 10

Percentage of the fruits in Box T are kiwis
= ¹⁰₂₀ x 100%
= 50%

Answer(s): 50%