A motorist buys 24 liters of petrol and 5 liters of oil for Tk. 1070, while another motorist buys 18 liters of petrol and 10 liters of oil Tk. 1, Find the price (in Tk.) of 1 liter of petrol and 1 liter of oil.
Solution
Correct Answer: Option C
suppose, price of petrol= x tk per litre price of oil = y tk per litre here, 24x+5y=1070…….i 18x+10y=1240…….ii i-ii 30x=900 or,x=30 so,y=70
then,petrol:oil=30:70
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