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The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is___________?
A. 45
B. 50
C. 51.4 approx.
D. 54.6 approx.
Arithmetic Mcqs · Easy · 4 weeks ago
The length of a hall is (4/3) times its breadth. If the area of the hall be 300 square meters the difference between the length and breadth is__________?
A. 15m
B. 4m
C. 3m
D. None of these
Areas · Easy · 4 weeks ago
Calculate the number of bricks, each measuring 25 cm * 15 cm * 8 cm required to construct a wall of dimensions 10 m * 4 m * 5 m when 10% of its volume is occupied by mortar?
A. 4000
B. 5000
C. 6000
D. 7000
Volumes · Easy · 4 weeks ago
(6 – 2 * 3 + 6) / (2 + 6 * 3 – 4) = _____________?
A. 9/8
B. 3/10
C. 3/5
D. 3/8
Simplification and Approximation · Easy · 4 weeks ago
In two successive years, 100 and 75 students of a school appeared at the final examination. Respectively 75 % and 60 % of them passed. The average rate of pass is:_________?
A. 68 4/7 %
B. 78 %
C. 80 %
D. 80 4/7 %
Percentage Mcqs · Easy · 4 weeks ago
A horse and a cow were sold for Rs. 12000 each. The horse was sold at a loss of 20 % and the cow at a gain of 20 %. The entire transaction resulted in___________?
A. No loss or gain
B. Loss of Rs. 1000
C. Gain of Rs. 1000
D. Gain of Rs. 2000
Profit and Loss Mcqs · Easy · 4 weeks ago
A top can fill a cistern in 8 hours and another can empty it in 16 hours. If both the taps are opened simultaneously the time (in hours) to fill the tank is
A. 8
B. 10
C. 16
D. 24
Pipes and Cisterns · Easy · 4 weeks ago
The average age of a 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. 30 years
C. 40 years
D. None of these
Arithmetic Mcqs · Easy · 4 weeks ago
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