For the following questions answer them individually
If the radius of a circle is increased by 23%, then by what percentage will its area increase?
Study the following graph that shows the number of boys and girls who appeared for the Class X examination in a school XYZ, in different years.
The average of the number of boys who appeared in 201 1, 2013 and 2015 is what percentage less than the number of girls who appeared in 20 14?
A sum of money is distributed among P, Q, R and S in the ratio 3:4:5:6. respectively. If R gets ₹500 more than P, then the sum of all their shares (in ₹) is:
A car travels a distance of x km at a speed of $$5\frac{5}{9}$$ m/sec and returns at 5 m/sec to the staning point. If the total time taken by the car is $$7\frac{3}{5}$$ hours, then the value of $$(x+3)$$ is:
The ratio of the speeds of two trains is 5:8. If the second train runs 600 km in 4 hours, then the speed of the first train (in km/h) is:
Study the following graph that shows the number of boys and girls who appeared for the Class X examination in a school XYZ, in different years.
The total number of girls who appeared in 2012, 2013, 20 14 and 2015 is what percentage less than the total number of boys who appeared in all the five years? ( correct to one decimal place)
The total number of students in class A and B is 72. The number of students in A is 40% more than that in B. The average marks of students in B are 50% more than that of students in A. If the average marks of all the students in A and B are 58, then what are the average marks of students in A?
There are three positive numbers. If the average of any two of them is added to the third number, the resulting sums are 154, 148 and 132. The sum of the original three numbers is:
A sum of money doubled itself at a certain rate of compound interest in 10 years. In how many years will it become eight times?
If the annual rate of simple interest increases from 8% to $$12\frac{1}{2}\%$$, a person's yearly income increased by ₹639. The principal amount (in ₹) is: