A student multiplied a number by 4/5 instead of 5/4. What is the percentage error in the calculation?
Let the required number = (LCM of denominator 4 and 5) = 20 According to the question, Wrong answer = 4/5 times; 20 = 16 Correct answer = 5/4 times; 20 = 25 Required percentage of error = [(25-16)/ 25] times; 100 = 36%
Teena decided to donate 10% of her salary as a charity. On the day of donation she changed her mind and donated Rs 3680 which was 9...
A number reduced by 33% becomes 335. What percent should it be increased so that it becomes 950?
A spent 30% and 20% of his monthly salary on food and rent, respectively. Of the remaining amount, he gave 20% and 30% to his mother and brother, respec...
The number of boys and girls in a school is 120 and 200 respectively. 25% of boys left the school while 40 girls took admission in the school. Find the ...
A spent 25% of his monthly income on study and 70% of the remaining on rent. If amount spent on rent is Rs. 2016, then find the amount spent on study
In an election two candidates participated. 10% voters did not vote. 11(1/9) % votes declared invalid and the winner got 50% of the valid votes. If he w...
The combined salaries of 'Arvind' and 'Bhanu' amount to Rs. 20,000. 'Arvind' utilized 80% of his salary, while 'Bhanu' spent 60% of his salary, resultin...
In a village 40% of votes were cast in an election. A and B were the contestants. A won by 600 votes. If B had got 60% more votes, there would have been...
B invests 20% of his monthly salary on Travelling and 20% of remaining on Food. Again, he invested 25% of the remaining (after travelling and food expen...
What is the value of √25% =?
