Question

यदि2 पेन, 3 पेंसिल और 4 रबर का मूल्य 92 ₹ है तथा 8 पेंसिल और 16 रबर का मूल्य 68 ₹ है, तब 24 पेन का मूल्य है

Answer 1

Answer:

Step-by-step explanation:

Pen

=48 rs

Answer 2

Answer:

The cost of 24 pens is (cost of 12 pencils) less than 900 i.e. 900 - 12y.

Step-by-step explanation:

Let the cost price of one pen be "x", one pencil be "y" and one rubber be "z".

According to the question we will get two equations as follow:

2x + 3y + 4z = 92. ------------------ (i)

8y + 16z = 68.        ------------------(ii)

24x = ?                  --------------------(iii)

4 * (i) - (ii) we get,

8x + 12y + 16z - 8y - 16z = 368 - 68

or, 8x + 4y = 300

or, 2x + y = 75

or, 2x = 75 - y

or, multiplying both sides by 12 we get,

24x = (900 - 12y)

Without 3 equations it won't be possible to find three unknown constant values. Thus we can get the cost in terms of y.