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Question :

In a class, the average marks got by number of students in English is 52.25. 25% students placed in C category made the average of 31 marks, while 20% who were placed in A category made the average of 80 marks. Find the average marks of the remaining students? 

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0 Answer 0 Comments 90 views January 07, 2019 at 07:36 pm

Question :

The average age of the group having 3 members is 84. One more person joins the group and now the average becomes 80. Now a fifth person comes whose age is 3 years more than that of fourth person replaces the first person. After this the average age of the group becomes 79. What is the weight of the first person? 

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0 Answer 0 Comments 96 views January 07, 2019 at 07:34 pm

Question :

For three successive years, the cost of petrol were Rs 20 per litre, Rs 22 per litre and Rs 23.50 per litre respectively. If a man spent an average of Rs 8000 per year on petrol, then he spent what average cost of petrol per litre for the three years? 

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0 Answer 0 Comments 89 views January 07, 2019 at 07:33 pm

Question :

The average age of a class of 20 students is 12 years. Out of which one student whose age is 10 year left the class and two new boys entered the class. The average of the class remains the same and the difference between the ages of new boys is 4 year. What will be the age of younger one .

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0 Answer 0 Comments 87 views January 07, 2019 at 07:24 pm