Question

7 pens and 2 pencils costs £22 3 pens and 4 pencils costs £11. Find the cost of a pen. Find the cost of a pencil.

Answer 1

Answer:

According to the given question

Let

x = pen

y = pencils

Cost of 7 pens and 2 pencils = $22

Cost of 3 pens and 4 pencils = $11

7x + 2y = rs. 22

2y = rs 22 - 7x

Y = 22 - 7x /

2

= 11 - 7x

X = 11 - 7

= 4

: Cost of pen = x = 4

3x + 4y = 11 rs

3.4 + 4y =11

12 + 4y =11

4y = 11 - 12 = 1

Y = 1/4

=0.25

: hope it helped

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