Find the compound interest (in ₹) on a sum of ₹7,500 for 4 years if the rate of interest is 20% per annum for the first two years and 10% per annum for the next two years. (The interest is compounded annually.)
Study the given pie charts and answer the question that follows.
The pie charts show the distribution of students of graduate and postgraduate levels in five different institutes P, Q, R, S and T in a town.
The difference between the average number of students of graduate level in institutes P, R and T to the average number of students of postgraduate level in institutes P, R and S is:
15 persons working 6 hours per day earn ₹900. How much money will 20 persons earn, working 10 hours per day?
x, y and z are three positive numbers such that y is \(\dfrac{4}{5}\) times of x and z is \(\dfrac{5}{8}\) times of y. If the average of reciprocals of the numbers x, y and z is \(\dfrac{17}{240}\) , then the average of 3 times of x and 5 times of y will be:
If 2x + 3y + 4z = 11, 8x3 + 27y3 + 64z3 = 105 and xyz = 1, then the value of 4x2 + 9y2 + 16z2 - 6xy - 12yz - 8xz is:
If \(1 + 4x^2 + 16x^4 = 512\) , and \(1 - 2x + 4x^2 = 64\) , then the value of \(1 + 2x + 4x^2\) is:
The sides of a triangle are in the ratio \(\dfrac{1}{3} : \dfrac{1}{5} : \dfrac{1}{4}\) and its perimeter is 141 cm. The difference between the greatest side and the smallest side is: