Question

39 kg of vegetable ghee was mixed with pure ghee to make it 61% pure. the dealer tries to improve the quality by putting a further 20 kg. of pure ghee into the mixture. what is the percentage of pure ghee in the new mixture?

Answer 1

61 % pure ghee means vegetable ghee are 39% now 61 kg pure ghee mixure with 39kg vegetable ghee
then 20 kg pure ghee add mixture
therefore 81 kg pure ghee and vegetable ghee are 39 kg and total ghee is 120 kg
120~~100%
81~~????%
81×100/120
pure ghee percentage are (67.5)%