Question

Sameer paidRs 32.85 for a file and 3 identical pens . Asif paid Rs 83.50 for 2 such files and 8 such pens . Find the cost of 1 pen

Answer 1

Answer:

let cost of 1 pen be p and cost of 1 file be f.

then

f + 3p = 32.85 ..(1)

2f + 8p = 83.50...(2)

multiplying eqn(1) by 2 and subtracting from eqn (2) we get, 2p = 17.8

p = 8.9

therefore cost of 1 pen is Rs 8.9.