(i) Shown below is a table illustrating the monthly income distribution of a company with 100 employees :
Using step- deviation method, find the mean monthly income of an employee.

(ii) The following bill shows the GST rate and the marked price of articles:

Find the total amount to be paid (including GST) for the above bill

(iii) In the given figure, O is the centre of the circle and AB is a tangent to the circle at B. If ∠PQB=55o .
(a) find the value of the angles x, y and z.
(b) prove that RB is parallel to PQ

Solution

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