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Let the initial number of male and female teachers are n and 3n respectively. Then,n: (3n + 24) = 2: 99n = 6n + 483n = 48n = 16
A person initially spends 50% of his salary and saves the rest. After his salary increases by 30%, he continues to save the same amount but now spends R...
Monthly savings of X is 70% of his monthly income which is Rs. 5600. If ratio of monthly expenditure of Y and X is 15:8 respectively and monthly savings...
In an examination, there are 200 questions, in the first section, out of 120 questions, a student got 65% marks, then how much percent he has to score i...
The monthly incomes of persons A and B are ₹4800 and ₹6400, respectively, while their monthly expenditures are ₹3600 and ₹5400. What is the rati...
Monthly savings of ‘A’ is Rs. 600 more than his monthly expenditure and his total monthly income is Rs. 5000. If his monthly income is increased by ...
A student has to secure 40% marks to pass an examination. He gets 150 marks and fails by 30 marks. What are the maximum marks?
The sum of the monthly incomes of ‘A’, ‘B’ and ‘C’ is Rs. 65000 which is 4 times the monthly income of ‘C’. If ‘A’ spends 55% of his...
Initially, a person spends 80% of his salary and saves the remaining 20%. After receiving a 10% salary increase, his savings remain unchanged, and he sp...
In a survey of 1,000 people, 40% preferred Brand X, 30% preferred Brand Y, and the remaining 30% had no preference. If the survey sample is expanded to ...
If the length of a rectangle is increased by 10% and the area is unchanged , then its corresponding breadth must be decreased by?
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