Question
The total number of students in class A and B is 72. The
number of students in A is 40% more than that in B. The average marks of students in B are 50% more than that of students in A. If the average marks of all the students in A and Bare 58, then what are the average marks of students in A?Solution
Let the number of students in class B is x then the number of students in class A will be = 1.4x Let the average marks of students in class A is y then the average marks of students in class B will be = 1.5y Now given, average of both the class is 58. Thus, (1.4x × y + x ×1.5y)/(x+1.4x) =58 1.4y +1.5y =58×2.4 y = (58×2.4)/2.9 =48.
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Some medals are sports.
All the sports are games.
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I. Some medals are games.
II. No sport is medal
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Only Metal is Bronze
Some Metal are not Gold
All Gold are Diamond
 Conclusion:         Â
...
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All M are K.
All K are J.
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No L is a P.
Conclusions: Â Â Â Â Â Â Â Â
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Some Ship are River
All River are Fish
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I. Some Boat are Fish
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Only a few Costs is Auctions.
No Cost is Inventory.
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All silvers are diamonds.
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In the question below are given four statements followed by three conclusions numbered I, II and III. You have to take the given statements to be true ...
