a) 61 b) 65 c) 69 d) None of these Answer: a Explanation: Total marks of six boys = ...
View QuestionA pupil’s marks were wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by half 1/2 . The number of pupils in the class is:
A pupil's marks were wrongly entered as 83 instead of 63. Due to that the average marks for ...
View QuestionIf the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is:
a) 53.33 b) 54.68 c) 55 d) None of these Answer: b Explanation: $$\eqalign{ & ...
View QuestionThere are 3 groups of students, each containing 25, 50 and 25 students respectively. The mean marks obtained by the first two groups are 60 and 55. The combined mean of all the three groups is 58. What is the mean of the marks scored by the third group ?
a) 52 b) 57 c) 58 d) 62 Answer: d Explanation: Let the ...
View QuestionThe average of runs of a cricket player of 10 innings was 32. How many runs must he make in his next innings so as to increase his average of runs by 4 ?
a) 2 b) 4 c) 70 d) 76 Answer: d Explanation: Average after 11 innings = ...
View QuestionOf the three numbers, the average of the first and the second is greater than the average of the second and the third by 15. What is the difference between the first and the third of the three numbers?
a) 15 b) 45 c) 60 d) None of these Answer: d Explanation: Let the numbers be x, ...
View QuestionOut of 9 persons, 8 persons spent Rs. 30 each for their meals. The ninth one spent Rs. 20 more than the average expenditure of all the nine. The total money spent by all of them was
a) Rs. 260 b) Rs. 290 c) Rs. 292.50 d) Rs. 400.50 Answer: c Explanation: ...
View QuestionA person purchase 1 kg of tomatoes from each of the 4 places at the rate of 1 kg, 2 kg, 3 kg, 4 kg per rupee respectively. On an average, he has purchased x kg of tomatoes per rupee. Then the value of x is
a) Rs. 1.92 b) Rs. 2 c) Rs. 2.50 d) None of these Answer: a Explanation: ...
View QuestionThe average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is:
a) 35 years b) 40 years c) 50 years d) None of these Answer: b Explanation: ...
View QuestionThe average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is Rs. 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is:
a) 3500 b) 4000 c) 4050 d) 5000 Answer: b Explanation: Let P, Q and R ...
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