a) 70 kg b) 66 kg c) 68 kg d) 69 kg Answer: c Explanation: Member in ...
View QuestionThe average of a group of men is increased by 5 years when a person aged of 18 years is replaced by a new person of aged 38 years. How many men are there in the group?
a) 3 b) 4 c) 5 d) 6 Answer: b Explanation: Let N be ...
View QuestionThe average age of three boys is 15 years. If their ages are in ratio 3 : 5 : 7, the age of the youngest boy is
a) 21 years b) 18 years c) 15 years d) 9 years Answer: d Explanation: ...
View QuestionThere are two sections A and B of a class, consisting of 36 and 44 students respectively. If the average weight of section A is 40kg and that of section B is 35kg, find the average weight of the whole class
a) 30 kg. b) 35 kg. c) 42.5 kg d) 37.25 kg. Answer: d Explanation: ...
View QuestionThe average of runs of a cricket player of 10 innings was 32. How many runes must be made in his next innings so as to increase his average of runs by 4?
a) 72 b) 74 c) 70 d) 76 Answer: d Explanation: Average after 11 innings = ...
View QuestionDavid obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, mathematics, physics, chemistry and biology. What are his average marks?
a) 65 b) 69 c) 75 d) None of these Answer: c Explanation: $$\eqalign{ & ...
View QuestionNine persons went to a hotel for taking their meals. Eight of them spent Rs. 12 each on their meals and the ninth spent Rs. 8 more than the average expenditure of all the nine. What was the total money spent by them.
a) Rs. 115 b) Rs. 116 c) Rs. 117 d) Rs. 118 Answer: c Explanation: ...
View QuestionThere were 35 students in a hostel. Due to the admission of 7 new students the expenses of the mess were increased by Rs.42 per day while the average expenditure per head diminished by Re 1. What was the original expenditure of the mess?
a) Rs. 450 b) Rs. 320 c) Rs. 550 d) Rs. 420 Answer: d Explanation: ...
View QuestionA batsman makes a score of 87 runs in the 17th inning and thus increases his average by 3. Find his average after 17th inning.:
A batsman makes a score of 87 runs in the 17th inning and thus increases his average by ...
View QuestionThe average score of a cricketer for ten matches is 38.9 runs. If the average for the first six matches is 42, then find the average for the last four matches.
a) 33.25 b) 33.5 c) 34.25 d) 35 Answer: c Explanation: ...
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