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Question
4
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The mean weight of 100 students in a class is 46 kg. The mean weight of boys is 50 and of girls is 40 kg. The number of boys is:
1. 50 2. 60 3. 70 4. 65
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Question
5
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The average age of A, B, C, D and E is 40 years. The average age of A and B is 35 years and the average of C and D is 42 years. Age of E is :
1. 48 2. 46 3. 42 4. 45
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Question
6
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A man started his journey from Lucknow to Kolkata, which is 200 km, at the speed of 40 kmph then he went to Banglore which is 300 km, at the speed of 20 kmph. Further he went to Ahamdabad which is 500 km, at the speed of 10 kmph. The average speed of the man is :
1. 14(2/7) kmph 2. 14(5/7) Kmph 3. 15 4. 16
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Question
7
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A cricketer scored some runs in his 21st innings, as a result, his average runs increased by 3. If the present average run is 40, how many runs he scored in the final innings?
1. 103 2. 100 3. 85 4. 82
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