Question

2 tables or 3 chairs cost Rs.150. Find the cost of 9 tables and 4 chairs.​

Answer 1

Do the unitary method

Answer 2

2 tables cost + 3 chair cost = Rs.150

9 tables cost + 4 chair = ?

let the cost of 1 table be x

let the cost of 1 chair be y

then,

2x + 3y = 150 ...1st equation

9x + 4y =