Question

A petrol pump owner mixed leaded and unleaded petrol in such a way that the mixture contai 10 % unleaded petrol. What quantity of leaded petrol should be added to 1 litre mixture so that the percentage of unleaded petrol becomes 5%

Answer 1

Answer:

1000 ml

Step-by-step explanation:

Here we have to find the quantity of leaded petrol.

Hence, we have to make certain changes in the given

data.

% of leaded petrol in the mixture = 100 – 10 = 90%

After addition of leaded petrol (that has to be calculated) percentage of leaded petrol becomes (100 – 5) = 95%

Now, applying the given theorem,

we have the required answer =

95 – 90

x 1000 ml = 1000 ml

100 – 95

Hence , required answer is 1000 ml .

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