Any Mathematicians Out There

zingo1327 | 13:15 Mon 04th Apr 2022 | Motoring

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I'm sure the answer is simple but my old brain has stopped working. My petrol tank was 25% full. I topped it up to full and it cost me £40. If I had let the tank run empty how much would it cost to fill it up to 100%? I would be grateful if you could explain how you worked it out. thanks in advance

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Buenchico

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Three quarters of a tank cost you £40. So one quarter of a tank would have cost you a third of that = £13.33. Add that onto the three quarters, to give you a full tank, and you get £53.33.

13:18 Mon 04th Apr 2022

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