Question

3 tables and 5 chairs together cost rs 3555while 7 tables and r chairs together cost 5787 find the cost of a table and that of a chairs

Answer 1

HEY MATE,

given that  3x+5y=3555

                 7x+4y=5788

then mul 1st eqn by 4 and 2nd eqn by 5 then

12x+20y=14220  --------(1)

35x+20y=28490  --------(2)

now, (2)-(1) then

x=640 and y=327

i.e tables=640 & chairs=327