DELHI POLICE MATHS QUIZ -15

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Question 1:

If an alloy is to contain copper and zinc in the ratio of 5: 4, how much quantity of copper is required to be melted with 20 kg of zinc ?

Question 2:

15 men and 6 women or 9 men and 8 women are required to complete a work in 25 days. If the work is to be completed in 15 days and the number of men is 19 , then how many women will be required?

Question 3:

A cubical tank has 48000 liters of water. Find the depth of water in the tank, if the length of the tank is $8 \mathrm{~m}$ and breadth is $3 \mathrm{~m}$.

Question 4:

A car runs first 280 km at an average speed of 50 km/h and the next 320 km at an average speed of 80 km/h. What is the average speed (in km/h) for the entire journey?

Question 5:

At certain rate of interest in certain time period Rs. 4,800 becomes Rs. 5,300  If rate of interest decreased by $15 \%$ and time period is thrice, what will be new amount?

Question 6:

The value of $39-[30-\{33-(19-4 \div 3$ of $8 \times 6)\}]$ is:

Question 7:

A man sells two articles at ₹ 9,180 each. He gains 8 % on one article and loses 15 % on the other. His overall profit or loss is:

Question 8:

The value of an article depreciates every year at the rate of $15 \%$ of its value. If the present value of the article is Rs. 14739 , then its value 3 years ago was.

Question 9:

84 Maths books, 90 Physics books, and 120 Chemistry books have to be stacked topicwise. How many books will be there in each stack so that each stack will have the same height too?

Question 10:

The average age of 26 students in a class is 15 years. If the teacher's age is included in it, then the average will increase by one. What is the teacher's age (in years)?