Question
PSLE
Mrs Lu had a bottle of oil. She used an equal amount of oil each day. At the end of the fifth day, she had 650 mℓ of oil left. At the end of the ninth day, she had half of the bottle of oil left. How many litres of oil were there in the bottle at first?
2 m

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PSLE
Mrs Lu had a bottle of oil. She used an equal amount of oil each day. At the end of the fifth day, she had 650 mℓ of oil left. At the end of the ninth day, she had half of the bottle of oil left. How many litres of oil were there in the bottle at first?