DELHI POLICE MATHS QUIZ-30

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Question 1:

In a class of 60 students, $\frac{1}{5}$ of the total number of students like to study Hindi, $\frac{3}{8}$ of the remaining like to study Mathematics and the remaining like to study Science. How many students like to study Science?

Question 2:

If the 5-digit number 9x34y is divisible by 24 , then what is the maximum value of $(\mathrm{x}+\mathrm{y})$ ?

Question 3:

The marked price of an article is $35 \%$ more than its cost price. If a certain discount is given on the marked price, then the profit made is $14 \frac{3}{4} \%$. What is the percentage Discount offered?

Question 4:

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 5:

The average weight of P, Q and R is 56 kg. The weight of R is 14 kg more than P and 4kg more than Q. What is the average weight (in kg) of P,Q, R and S if weight of S is 12 kg less than P?

Question 6:

The cost of levelling a circular field at ₹ 5 per $m^2$ is ₹ 19,250 . What is the cost (in ₹) of putting a fence around it at ₹ 24 per $m$ ? ( Take $\left.\pi=\frac{22}{7}\right)$

Question 7:

Ravi, Sudeep and Kishore started a business by investing Rs 27000, Rs 81000 and Rs 72000, respectively. At the end of 1 year, Sudeep’s share in total profit was Rs 36000. What was the total profit?

Question 8:

In what ratio should oil costing Rs.200/liter be mixed with oil costing 240/liter so that after selling the mixture at Rs.258/liter there is a gain of $20 \%$ ?

Question 9:

A policeman goes from his home to police station with his bike at a speed of $50 \mathrm{~km} / \mathrm{h}$, he is late by 30 minute. If he goes at $60 \mathrm{~km} / \mathrm{h}$, he is late by only 5 minute. Find the distance between his house and police station. (in $\mathrm{km}$ )

Question 10:

A can do $75 \%$ of the work in 9 days, B can do $40 \%$ of the same work in $6 \frac{2}{5}$ days. In how many days A and B working together will do $43.75 \%$ of the same work?