Question

cost of 17 pencils is Rs. 42 1/2. Find the cost of each pencil . Also find the C.P of 6 such pencils​

Answer 1

Answer:

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

Answer 2

cost of one pencil =2 1/2 and the CP of 6 pencil is 15