Teacher: When crude oil was N119
per barrel, we buy petrol for N97 per
litre
Now that crude oil is N49 per barrel
with all other things being equal,
what is the expected price of petrol
per litre?
Jonathan: N87.
Teacher: Pls who award PhD to this
man who doesn't know simple
arithmetic?
Teacher: buhari what is d answer?
Buhari: sir, the only items that
change is price, so our change
formular is;
If N119 changed to N49
Then N97 will CHANGE to N27
Teacher: But they said u don't have
certificate?
Buhari: it's a simple arithmetic, even
market woman can solve it.
Teacher: Chai chai..... we need change.