Question

the ratio of cost of a pencil to that of pen is 2:3 where as ratio of cost of pen to notebook is 4:5. if notebook cost rs.15 find cost of pencil and pen​

Answer 1

Answer:

cost of pencil/cost of pen=2/3

cost of pen/cost of notebook=4/5

2/3*4/4=8/12

4/5*3/3=12/15

cost of pencil=8

cost of pen=12

coar of notebook=15(given that)