Question
Mr Goh's lorry was left with 15 fuel. He added 10 ℓ of fuel to his lorry, it became 815 full. How much more fuel was needed to fill up Mr Goh's lorry?
4 m

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Mr Goh's lorry was left with 15 fuel. He added 10 ℓ of fuel to his lorry, it became 815 full. How much more fuel was needed to fill up Mr Goh's lorry?