Question

9 and 5 pencil cost rupees 154 and 30 10 and 7 pencil course rupees 222 find the cost of one pen and one pencil

Answer 1

Answer:

Cost of one

Pen = Rs 18

Pencil = Rs 6

Step-by-step explanation:

Let the number of pens be x

Let the number of pencils be y

According to the question

$9x = 154 \\\\x = \frac{154}{9} \\\\x = Rs 18 ( approx )\\\\5y = 30\\\\y = Rs 6\\\\10x + 7y = 222\\\\10(18) + 7(6) = 222$

So the cost of one pen = Rs 18

one pencil = Rs 6