Question

Fifteen post cards cost Rs 2.25. What will be the cost of 36 post cards. How many postcards can we buy in Rs 45

Answer 1

Answer:

Given,

Cost of 15 post cards = ₹2.25

So, cost of 1 post card = 2.25/15

                                     = ₹0.15

I. Cost of one card = ₹0.15

   Cost of 36 cards = 36 × 0.15

                                =  ₹5.4

II. Cost of one card = ₹0.15

    Cost of 'x' cards = ₹ 45

    Cost of 'x' cards = 45/ 0.15

    Cost of 'x' cards = 300

∴ 300 postcards can be bought in ₹45