Question

The cost of 5 pens and 8 pencils is 142, in which one pencil costs * 18 less than
the cost of one pen. Taking the cost of each pen to be *x, find :
(i) cost of 1 pencil, in terms of x.
(ii) cost of 5 pens and 8 pencils, in terms of x.
Maw use the given ins​

Answer 1

Answer:

4

Step-by-step explanation:

Given total cost of 5 pens and 10 pencil = Rs 30

5 pens + 10 pencils = 30

pens + 2 pencils = 1

also given pen cost 3 more than a pencil

i.e, pen = 3 + pencil.

pen - pencil = 3

pens + 2 pencils = 6

_______________

-3 pencils = -3

pencils = 1

pen - 1 = 3

pen = 4

cost of pencils = 1    cost of pen = 4