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Question 1
In a school, the respective ratio of number of boys and number of girls is 7:5. The average age of boys is 20% more than that of girls and the average age of whole class is 13.4 years. What is the average age of girls?
Question 2
If the sales tax be reduced from 
to 
What difference does it make to person who purchases an article whose marked price is Rs.8400?
to What difference does it make to person who purchases an article whose marked price is Rs.8400? Question 3
If the average of 10%, 25%, 50% and 75% of a number is 24, then the number is:
Question 4
Find the ratio in which rice at Rs. 7.20 a kg be mixed with rice at Rs. 5.70 a kg to produce a mixture worth Rs. 6.30 a kg.
Question 5
In a class of 65 students there are 39 girls. The average weight of these girls is 60 kg and average weight of the full class is 64 kgs. What is the average weight of the boys of the class ?
Question 6
If a number is divided by 8, it leaves 4 as remainder. If 4 times of this number is divided by 8, then what would be the remainder?
Question 7
Sumit, Arjun, and Sarwan can do a work in 20 days, 40 days and 30 days respectively by working alone. Find total time in which the whole work is completed if they work on alternate days starting with Sumit.
Question 8
A cistern can be filled with water by a pipe in 5 hrs and it can be emptied by a second pipe in 4 hrs. If both the pipes are opened together when cistern was full, the time in which cistern will be emptied is:
Question 9
A student multiplied a number by 5/6 instead of 6/5. What is the percentage error in the calculation?
Question 10
A trader gives 12% additional discount on the discounted price, after giving an initial discount of 20% on the labelled price of an item. The final sale price of the item is Rs. 704. Find out the labelled price?
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Nov 29CDS & Defence
