Question

if the postcards costs Rs. 7.50. what will be the cost of 38 such postcards​

Answer 1

1 postcard = Rs. 7.50

therefore, 38 postcards = 7.50 * 38 = Rs. 285

Answer 2

Answer:

Rs. 285

Step-by-step explanation:

$\text{ This problem can be solved using the method of ratio and proportions}\\\\\star \text{Given that 1 Post card costs Rs. 7.5, then how much would 38 cards cost}\\\\\implies 1\:card : Rs\: 7.5 :: 38\:cards = ? ( x )\\\\\text{Product of Means = Product of Extremes}\\\\\implies 1 \times x = 7.5 \times 38\\\\\implies \boxed{x = 285}\\\\\textbf{Hence the cost of 38 cards is Rs. 285}$