DELHI POLICE QUANT QUIZ-4

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Question 1:

Arti and Rita can do a job in 8 hours (working together at their respective constant rates) and Arti can do the job alone in 10 hours. In how many hours can Rita do the job alone?

Question 2:

Radha who is half as efficient as Kirti, will take 30 days to complete a task if she works alone. If Radha and Kirti work together, how long will they take to complete the task?

Question 3:

Two students A and B appeared in an examination. A secured 9 marks more than B and his marks were 60 % of the sum of their marks. The marks obtained by A were:

Question 4:

By selling an article for ₹ 375, a man gains an amount such that the profit percentage is equal to cost price. The cost price of the article is:

Question 5:

The compound interest on a certain sum of money for 2 years at 8% per annum compounded annually is ₹ 416 . What is the simple interest on the same sum at the same rate for the same period?

Question 6:

The value of $104 \div 39$ of $\frac{2}{3}+1 \frac{2}{5} \times 12 \frac{1}{7}-\frac{3}{4}$ is

Question 7:

The side of a square is 10 cm. If the side of the square is doubled, how many times will the new perimeter be?

Question 8:

The side of an equilateral triangular board is 12 m. Find the cost (in Rs) of fencing the board at the rate of Rs 4.50 per metre.

Question 9:

A man travelled a distance of $47 \mathrm{~km}$ in 6 hours. He travelled partly on foot at a speed of $6 \frac{1}{2} \mathrm{~km} / \mathrm{h}$ and the rest on a bicycle at a speed of $8 \frac{1}{2} \mathrm{~km} / \mathrm{h}$. The distance travelled (in $\mathrm{km}$ ) on bicycle is

Question 10:

Find the unknown value of ' $x$ ' in the proportion $(5x+1) :3=(x+3) :7$.