The average number of pomegranates in Box P, Box Q and Box R is 12 and it is 4 more than the average number of starfruits in the 3 boxes. ¹₃ of the starfruits are in Box P and the starfruits in Box P is 80% of the number of starfruits in Box Q. If each box has the same number of fruits, what percentage of the fruits in Box R are pomegranates?
Average number of starfruits
= 12 - 4
= 8

Total number of starfruits
= 3 x 8
= 24

Total number of pomegranates
= 3 x 12 
= 36

Total number of fruits
= 24 + 36
= 60

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

Starfruits in Box P	Starfruits in Box Q	Starfruits in Box R	Total starfruits
1x4	2x4		3x4
4x1	5x1
4 u	5 u	3 u	12 u

80% = ⁸⁰₁₀₀ = ⁴₅

The number of starfruits in Box P is repeated.  Make the number of starfruits in Box P the same.  LCM of 1 and 4 is 4. 

Total number of starfruits
= 4 u + 5 u + 3 u
= 12 u

12 u = 24

1 u = 24 ÷ 12 = 2

Number of starfruits in Box R
= 3 u
= 3 x 2
= 6

Number of pomegranates in Box R
= 20 - 6
= 14

Percentage of the fruits in Box R are pomegranates
= ¹⁴₂₀ x 100%
= 70%

Answer(s): 70%