Question

PLS SOLVE THIS ONE

5 bags of rice, 6 bags of soybeans and 9 bags of red beans weigh 50 kilograms, while 17 bags of rice, 18 bags of soybeans and 27 bags of red beans weigh200 kilograms so how many kilograms does one bag of rice weigh?

Answer 1

let take rice bag is x.

soyabean bag is y.

red beans is z.

so the first equation is 5x+6y+9z=50

second equation is 17x+18y+27z=200

mutiply equation 1 with 3 and sunstitute

so the equation is 15x+18y+27z=150

-17x-18y-27z=-200

-2x=-50

x=25