Question

9 chairs 5 tables cost Rs 90 while 5 chairs and 4 tables cost Rs 61. Find the price of 6 chairs and 3 tables.

Answer 1

9x +5y=90 (1) __×5

5x +4y=61 (2)____×9

45x+25y=450

45y+36y=549

_-__-____-____

0x-11y=-99

11y=99

y=99/11

y=9

from__(1)

9x+5y=90

9x+5[9]=90

9x+45=90

9x=90-45

9x=45

x=45/9

x=5

chair =6×5

=30

tables =3×9

=27