a) 67 kg b) 68 kg c) 69 kg d) Data inadequate Answer: a Explanation: Let ...
View QuestionIn 2011, the arithmetic mean of the annual incomes of Ramesh and Suresh was Rs. 3800. The arithmetic mean of the annual incomes of Suresh and Pratap was Rs. 4800, and the arithmetic mean of the annual incomes of Pratap and Ramesh was Rs. 5800. What is the arithmetic mean of the incomes of the three?
a) Rs. 4000 b) Rs. 4200 c) Rs. 4400 d) Rs. 4800 Answer: d Explanation: ...
View QuestionThe average of five different positive numbers is 25. x is the decrease in the average when the smallest number among them is replaced by 0. What can be said about x?
a) x is less than 5 b) x is greater than 5 c) x is equal ...
View QuestionThe average age of a family of 5 members is 20 years. If the age of the youngest member be 10 years then what was the average age of the family at the time of the birth of the youngest member?
a) 13.5 b) 14 c) 15 d) 12.5 Answer: d Explanation: At present ...
View QuestionThe difference between two angles of a triangle is 24°. The average of the same two angles is 54°. Which one of the following is the value of the greatest angle of the triangle?
a) 45° b) 60° c) 66° d) 72° Answer: d Explanation: Let a and b ...
View QuestionWhen a student weighing 45 kgs left a class, the average weight of the remaining 59 students increased by 200g. What is the average weight of the remaining 59 students?
a) 57 b) 56.8 c) 58.2 d) 52.2 Answer: a Explanation: Let the average weight of the 59 students ...
View QuestionThe average temperature on Wednesday, Thursday and Friday was 25°. The average temperature on Thursday, Friday and Saturday was 24°. If the temperature on Saturday was 27°, what was the temperature on Wednesday?
a) 24° b) 21° c) 27° d) 30° Answer: d Explanation: Total temperature on ...
View QuestionThe average wages of a worker during a fortnight comprising 15 consecutive working days was Rs.90 per day. During the first 7 days, his average wages was Rs.87/day and the average wages during the last 7 days was Rs.92 /day. What was his wage on the 8th day?
a) 83 b) 92 c) 90 d) 97 Answer: d Explanation: The ...
View QuestionIf the average of m numbers is n^2 and that of n numbers is m^2 , then the average of (m + n) numbers is
If the average of m numbers is n2 and that of n numbers is m2 , then ...
View QuestionThe arithmetic mean of 15 numbers is 41.4. Then the sum of these numbers is
a) 414 b) 420 c) 620 d) 621 Answer: d Explanation: Sum of numbers = (41.4 ...
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