Question

please answer step by step​

Answer 1

We know that everything is of 100 %

So we will write ,

42/70*100

3/5*100

3*20

60 %

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Answer 2

Step-by-step explanation:

total oil = 70 litres

used oil = 42 litres

left oil = 28 litres

% left oil = 28 / 70 × 100

40 %

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