Question

To raise money for an orphanage, students of three schools A, B, C organised an exbition in their locatlity,where they sold paper bags, scrap-books and pastel sheets made by them using recycled paper, at rate of Rs. 20,Rs.15 and Rs.5 per unit respectively.School A sold 25 paper-bags,12 scrap-books and 34 pastel sheets wle. School B sold 22 paper-bags,15 scrap-books and 28 pastel sheets wle School C sold 26 paper-bags,18 scrap-books and 36 pastel sheets. Using matrices, find the total amount raised by each school.

Answer 1

school a.                 20*25+15*12+5*34=500+180+170
total=RS.850
school b                  20*22+15*15+5*28=440+225+140
TOTAL=805
school c                  20*26+15*18+5*36=520+270+180
TOTAL=RS.970





520+270+180