Question
The data given below shows the marks obtained by 12
different students in an exam. Marks obtained: 18, 22, 25, 28, 35, 39, 47, 50, 50, 64, 65, 85 Calculate the difference between the median and the mean of the marks obtained by 12 students:Solution
Mean of the marks obtained = (18 + 22 + 25 + 28 + 35 + 39 + 47 + 50 + 50 + 64 + 65 + 85) ÷ 12 = 44 When the data in arranged in ascending order, average of the 6th and 7th observation = (39 + 47) ÷ 2 = 43 So, required difference = 44 - 43 = 1
Anjali earned 236 marks in Economics but fell short of the passing mark by 64 points, given the required minimum of 40%. What is the total number of mar...
A bag contains 300 coins of 25p denomination and 600 coins of 50p denominations. If 10% of 25p coins and 20% of 50p coins are removed, the percentage of...
Two numbers are less than a third number by 30% and 37%, respectively. By how much percent is the second number less than the first?
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 ...
Rajesh spent 48% of his monthly income on food and 52% of the remaining of study. If total monthly savings (after spending on food and study) of Rajesh ...
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...
'Aman' is 4 years younger than 'Bharti', and 'Bharti' is 8 years younger than 'Chetna'. If the ratio of 'Aman's age 8 years from now to 'Chetna's age 6 ...
- 35% of ‘p’ and 55% of ‘q’ together sum up to 190. If ‘q’ is 50 greater than ‘p’, then find the value of (2p – q).
Income of Riya is Rs. (124n + 1680). She spends 75% of her income and saves the rest. Savings of her friend Mehul is Rs. 960 more than that of her. Mehu...
- In a mayoral election, candidate P got 75% of the total votes, winning over candidate Q by 9,600 votes. What is the number of votes secured by candidate Q?
