Using A–1 solve the system of equations
2x – 3y + 5z = 11
3x + 2y – 4z =  – 5
x + y – 2z =  – 3
16 The cost of 4 kg onion, 3 kg wheat and 2 kg rice is ` 60 The cost of 2 kg onion,
4 kg wheat and 6 kg rice is ` 90 The cost of 6 kg onion 2 kg wheat and 3 kg rice
is ` 70