Question

Q10. A petrol pump owner mixed leaded and unleaded petrol in such a way such that the mixture contains 10% unleaded petrol. What quantity of leaded petrol should be added to 1 litre mixture, so that the percentage of unleaded petrol becomes 5%?
Allegation and mixture method prefer

Answer 1

Answer:

1000/5×10

1000×2

2000

Answer 2

Answer:

10%of 1000=100 unleaded

900ml is leaded.

to make percentage of uleaded petrol 5%, 1000 ml leaded petrol is added.

to find percentage of unleaded after adding 1000 ml leaded petrol

(100/2000)*100=5%

Step-by-step explanation: