In a legislative assembly election, a political group hired a public relations firm to promote its candidates in three ways: telephone, house calls and letters. The cost per contact (in paise) is given matrix A as A=Cost per contact [[40] – Telephone, [100]-House call, [50]-Letter] The number of contacts of each type made in two cities X and Y is given in matrix B as Find the total amount spend by the group in the two cities X and Y.