Senator Ben Murray-Bruce Challenges Increase In Kerosene Price From N50 To N83

 Senator Ben Murray-Bruce has challenged the Federal government's increase of Kerosene price from N50 to N83 per litre. See tweet after the cut....
Kerosene is made from crude. 2 years ago crude was $130 and kerosene was ₦50. By what mathematics can kerosene be ₦83 now that crude is $28?