QFormula For Successive increase or decrease of percentage

The formula for Successive Discount: If two successive discounts of a% and b% are offered then the net discount offered is... Formula for Percentage reduction in consumption... If the price of petrol is increased by 20% and subsequently 40%, what is the final price if the original price is Rs. 25?... If two numbers are less than a third number by 40% and 47% respectively, approximately what percentage is the second number less than the first?... Find the net discount offered on two successive discounts of 20% and 30%?... The quantity of water in milk constitutes 5 parts for every 15 parts of the mixture. What is the percentage of water in the mixture?... If A's income is 25% more than B's income then by what percentage is B's income less than A's?... In a factory where 40% of the workers are technicians and 60% are non-technicians, and 60% of the technicians and 40% of the non-technicians are permanent employees, what is the percentage of workers who are te... What will the population of a town be in two years if it has a current population of 1,76,400 and grows at a rate of 5% per year, and what was the population of the town two years ago?... If 5% of the people in a village in Sri Lanka died by bombardment and 15% of the remainder left the village out of fear, and the population is now reduced to 3553, what was the population in the beginning?...