There were some lemons, kiwis and apples. The number of lemons was four times the number of kiwis. The total number of lemons and kiwis was half of the number of apples. There were 180 fruits altogether. All the apples were sold at 5 for $11. How much money was collected from the sale of the apples?
Number of kiwis = 1 u
Number of lemons = 4 u

Total number of kiwis and lemons
= 1 u + 4 u
= 5 u

Number of apples
= 2 x 5 u
= 10 u

Total number of fruits
= 1 u + 4 u + 10 u
= 15 u

15 u = 180

1 u = 180 ÷ 15 = 12

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

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

Amount collected from the sale of apples
= 24 x 11
= $264

Answer(s): $264