Question

15 postcard, cost rupees 2.25. what will be the cost of 36 postcard.how many post card will be buy in rupees 45.

Answer 1

Answer:

Step-by-step explanation: it can be done by unitary method

Cost of 15 cards = 2.25 Rs

so, Cost of 1 card = 2.25/15

                            = 0.15 rs

so, Cost of 36 cards = 36*0.15

                                  = 5.4 Rs

In 0.15 Rs , we can get 1 cars

so In 45 Rs , we can get 45/0.15  cards

                                        =  300 cards