The histogram drawn on the graph represents the number of students of different heights (in cm).

Using the graph, answer the following :

(a) the number of students whose height is 150 cm and above.

(b) the modal height.

(c) the total number of students.

A(−10, −2) and B(2, 10) are two end points of a line segment. If AB intersects the x-axis at P, find the :

(a) ratio in which ‘P’ divides AB.

(b) coordinates of point P.

Kabir bought 120 shares of a company with nominal value ₹100, available at a premium of ₹25. Find :

(a) the money invested by Kabir in buying these shares.

(b) the rate of dividend, if he received ₹ 1,080 as dividend from these shares after one year.

(c) his rate of return.

Find the mean of the following frequency distribution using step-deviation method.

Take assumed mean = 28