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Let number of balls = (3 + 9) = 12. Number of white balls = 9 P (drawing a white ball) = 9/12 = 3/4.
Which of the following represent a 20% increase and a 10% decrease, respectively?
In a ward member election, a candidates secure 67% of the votes and is elected by majority of 5100 votes. The total number of votes polled is?
In class ‘C’, the number of girls is 25% more than that of boys while in class ‘D’ the number of girls is 40% more than that of boys. If the tot...
A batsman scored 120 runs which included 3 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets. ...
Alloy A contains copper and zinc in the ratio 4:5 and alloy B contains copper and zinc in the ratio 7:2. A and B are taken in the ratio 7:4 and melted t...
Two candidates, 'K' and 'L', contested in an election. 'K' received 59% of the votes and won over 'L' by 3,540 votes. How many votes did 'L' receive?
A man spends 21% and 12% of his monthly salary on rent and transportation, respectively. Out of the remaining money, he spends 26% on food and 41% on en...
In physics examination a student scored 45% marks in the first paper out of 160. How much percent marks should he score in the second paper out of 140 ...
The ratio of the monthly earning of A to that of B is 5:7.If monthly earning of A increased by 25% and that of B decreased by 60% the new ration between...
