SOLUTION: A small car uses 8 litres of petrol to drive 100kms. I need to travel 84 kms. Will I have enough petrol if I only have $10 of petrol. Please explain the answer

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Question 891459: A small car uses 8 litres of petrol to drive 100kms. I need to travel 84 kms. Will I have enough petrol if I only have $10 of petrol. Please explain the answer
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
What is the petrol price?
Let p = price of petrol as SOMEMONEYUNITS per LITERS, implying dollars per liter.

84%2Akilometers%2A%288%2F100%29%28litrs%2Fkilometer%29%2Ap%2A%28dollars%2Fliter%29.
Compare that to 10. If it is less than or equal to 10, then YES, you can buy enough petrol.