Question
Mr Choo's car was left with 25 fuel. He added 12 ℓ of fuel to his car, it became 815 full. How much more fuel was needed to fill up Mr Choo's car?
4 m

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Mr Choo's car was left with 25 fuel. He added 12 ℓ of fuel to his car, it became 815 full. How much more fuel was needed to fill up Mr Choo's car?