Question
If the price of a sugar bag is reduced by 40%, by what
percentage should a family increase its consumption of sugar bags to ensure that their total expenditure on sugar remains unchanged?Solution
ATQ;
Let initial price of sugar bag be Rs. 100 per kg and initial consumption be 1 kg
So, initial total expenditure = Rs. 100
Reduced price of sugar bag = {100 – (40% of 100)} = Rs. 60
So, new consumption = {100/60} = (5/3) kg
Therefore, percentage increased = [{(5/3) – 1}/1] × 100 = 66.67%
Meenu spent 20% of the salary on entertainment and 10% on makeup. She spent 20% of the remaining on the food and 50% of the remaining invested in mutual...
A reduction of 20% in the price of cinema tickets would enable me to see 15 movies more for Rs. 1200. Find the original price of one ticket.
Sonu saves 15% of her income. If her income increases by 20% and she still saves the same amount as before, then what is the percentage increase in her ...
In a village 80% of votes were cast in an election. A and B were the contestants. A won by 800 votes. If B had got 20% more votes, there would have been...
- In a university examination, the passing marks are set at 50%. Marks obtained by ‘X’ are 12% less than the passing marks, and ‘Y’ scores 30% marks ...
20% of ‘m’ added to 80% of ‘n’ equals 180. If ‘n’ is 90 more than ‘m’, find the value of (2m – n)
The only expenses of Arun are on grocery, rent and fun expenses. Arun spent Rs. 5,250 on fun, amount spent by him on rent is Rs. 9,000 more than that on...
The population of a city increased by 11% for two consecutive years and then decreased by 30% in the third year. If the final population in 2023 was 21,...
In an exam, Rina scored 54% marks and failed by 80 marks whereas Tina scored 74% marks in the same exam and scored 60 marks more than the passing marks....
A spent 25% of his monthly income on study and 60% of the remaining on rent. If amount spent on rent is Rs. 945, then find the amount spent on study
