Mary had ₹10 in her purse. If she bought five 50 paise stamps, we need to calculate how much money she would have left.
First, let's convert the denomination of the stamps from paise to rupees. Since 100 paise make 1 rupee, the value of each 50 paise stamp is 50/100 = ₹0.50.
Next, we calculate the total cost of the stamps by multiplying the price of each stamp by the number of stamps:
Total Cost = ₹0.50/stamp * 5 stamps = ₹2.50
To find out how much money Mary would have left, we subtract the total cost of the stamps from the initial amount she had:
Remaining Amount = ₹10 - ₹2.50 = ₹7.50
Therefore, if Mary bought five 50 paise stamps, she would have ₹7.50 left in her purse.