Question

In January​ 2013, a​ country's first-class mail rates increased to 47 cents for the first​ ounce, and 25 cents for each additional ounce. If Sabrina spent ​$19.22 for a total of 54 stamps of these two​ denominations, how many stamps of each denomination did she​ buy?

Answer 1

Answer:26 first class stamps and 28 additional.

Explanation:

From information given,we can formulate the following equation: 47n +25(54-n ) = 1922

Now we solve for n .

47 + 1350+ 25n =1922

47n -25n =1922- 1350

22n=572

n= 26 .

Therefore 26 first class stamps and 28 additional. 54 total