Question

Cost of 7 pens and 8 pencils is Rs 87.cost of 6 pens and 4 pencils is Rs 66.write linear equations representing the above data and draw it's graph .also find the cost of 1 pen and 01 pencil from the graph

Answer 1

Answer:

7x + 8y =87

6x + 4y =66 ( ×2)

= 12x + 8y = 132

then solve by elimination method