A 60- litre tank was full of oil. Sam used 40 %of it and poured the rest into a 40 litre tank. (1) what per cent of the 40litre tank was filled with oil.
(2)if Sam used 3 litre of oil daily, what per cent of oil in the 40 litre tank would be used in 10 days.
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hey mate here is the answer
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