Question

The cost of 12 pens and 10 pencils together is 194 whereas 13 pens and 7 pencils together cost 3 less. Represent the above statement by pair of linear equations using two variables

Answer 1

Answer:

Let the prize of pens be x and cost of pencils be y.

Therefore

12x + 10y = 194           - eq 1  (multiply by 7)

13x + 7y = 191              - eq 2 (multiply by 10)

Cost of each pen would be 10 and of pencils would be 7.4