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3j+5p+1a=19000
4j+2p+3a=17000
(4j+2p+3a=17000) - (2j+1p+3a=11500) =
* 2j+p = 5500
((3j+5p+1a=19000)x3) - ((2j+1p+3a=11500)x1) =
(9j+15p+3a=57000) - (2j+1p+3a=11500)=
**7j+14p = 45500
((2j+p=5500)x14) - ((7j+14p = 45500)x1)=
(28j+14p=77000) - (7j+14p = 45500) =
21j = 31500
j = 1500
*** jeruk = 1500
pir = 2500
apel = 2000