Question

Look at the postal rates given in the chart.
1. How much will you have to pay for stamps on a letter weighing 50 grams? ___________
2. Akash wants to send a parcel of the Math Magic textbook to his friend Rani in Chennai. The book weighs 200 g. See the chart to find the cost of posting the book. __________

Answer 1

1.
Weight of a letter = 50 g
Cost of a letter weighing 20 g or less = Rs 5
If the weight of a letter is more than 20 g, then the cost for every additional 20 g is Rs 2.
Now, weight of letter = 50 g
= 20 g + 20 g + 10 g
Total cost paid for the stamps = Rs 5 + Rs 2 + Rs 2
= Rs 9

2.
Cost of a parcel weighing 50 g or less = Rs 5
If the weight of a parcel is more than 50 g, then the cost for every additional 50 g is Rs 3.
Weight of the parcel containing a book = 200 g
= 50 g + 50 g + 50 g + 50 g
Total cost to be paid by Akash = Rs 5 + Rs 3 + Rs 3 + Rs 3
= Rs 14

Thus, Akash has to pay Rs 14 for posting the book.