a) $$52\frac{1}{3}$$ b) $$52\frac{1}{2}$$ c) $$52\frac{2}{3}$$ d) None of these Answer: c Explanation: Sum of the weights of the ...
View QuestionThe average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is:
a) 17 kg b) 20 kg c) 26 kg d) 31 kg Answer: d Explanation: ...
View QuestionThe average age of seven boys sitting in a row facing North is 26 years. If the average age of the first three boys is 19 years and the average age of the last three boys is 32 years, what is the age of the boy who is sitting in the middle of the row?
a) 24 years b) 28 years c) 29 years d) 31 years Answer: c Explanation: Age ...
View QuestionA family consists of grandparents, parents and three grandchildren. The average age of the grandparents is 67 years that of the parents is 35 years and that of the grandchildren is 6 years. What is the average age of the family?
a) $$28\frac{4}{7}{\text{ years}}$$ b) $$31\frac{5}{7}{\text{ years}}$$ c) $$32\frac{1}{7}{\text{ years}}$$ d) None of these Answer: b Explanation: ...
View QuestionThe average of 4 positive integers is 59. The highest integer is 83 and the lowest integer is 29. The difference between the remaining two integers is 28. Which of the following integers is higher of the remaining two integers ?.
a) 39 b) 48 c) 76 d) Cannot be determined Answer: c Explanation: Sum of four integers ...
View QuestionThere are five boxes in a cargo hold. The weight of the first box is 200 kg and the weight of the second box is 20% more than the weight of third box, whose weight is 25% more than the first box’s weight. The fourth box at 350 kg is 30% lighter than the fifth box. The difference in the average weight of the four heaviest boxes and the four lightest boxes is
a) 37.5 kg b) 51.5 kg c) 75 kg d) 112.5 kg Answer: c Explanation: Weight ...
View QuestionThe body weight of seven students of a class is recorded as 54 kg, 78 kg, 43 kg, 82 kg, 67 kg, 42 kg and 75 kg. What is the average body weight of call the seven students?
a) 63 kg b) 69 kg c) 741 kg d) 73 kg Answer: a Explanation: ...
View QuestionMy Scooty gives an average of 40 kmpl of petrol. But after recent filling at the new petrol pump, its average dropped to 38 kmpl. I investigated and found out that it was due to adulterated petrol. Petrol pimps add kerosene, which is 2/3 cheaper than petrol, to increase their profits. Kerosene generates excessive smoke and knocking and gives an average of 18 km per 900 ml. If I paid Rs. 30 for a litre of petrol, What was the additional amount the pump-owner was making?
My Scooty gives an average of 40 kmpl of petrol. But after recent filling at the new petrol ...
View QuestionA passenger travels from Delhi to Merut at a speed of 30 kmph and return with a speed of 60 kmph. What is the average speed?
a) 45 b) 48 c) 40 d) 50 Answer: c Explanation: Average Speed $$\eqalign{ & = \frac{{2 \times ...
View QuestionStudents of three different classes appeared in common examination. Pass average of 10 students of first class was 70%, pass average of 15 students of second class was 60% and pass average of 25 students of third class was 80% then what will be the pass average of all students of three classes?
a) 69% b) 72% c) 74% d) 75% Answer: b Explanation: $$\eqalign{ & {\text{Sum}}\,{\text{of}}\,{\text{pass}}\,{\text{student}}\,{\text{}}\,{\text{first,}}\,{\text{second}}\,{\text{and}}\,{\text{third}}\,{\text{class}}, \cr ...
View Question