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To test the backup data for data integrity and completeness
In a school, the average number of books that some numbers of boys have is 100 and average number of books that some numbers of girls have is 70. If eac...
Z spends 60% of his salary and saves the remaining. After his salary is increased by 30%, he saves 55% of the increased amount besides the amount he use...
Ramesh's salary drops from Rs. 45,000 to Rs. 37,800. What is the percentage fall in his salary?
In an assembly election, a candidate got 60% of the total valid votes. 2% of the total votes were declared invalid. If the total number of voters is 126...
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...
In an exam, Sunil scored 45% marks and failed by 18 marks while Rina scored 90% marks and scored 72 marks more than the passing marks. Find out the pass...
An original figure is first enhanced by 25% and then reduced by 10%. What is the final overall percentage change?
Seven years ago, the ratio of the ages of A and B was 4: 5. Eight years hence, the ratio of the ages of A and B will be 9:10. What is the sum of their p...
The population of a city is decreased by 15% in the first year and then increased by 20% in the second year. Find the population of the city at the end...
