Question

The note cards in 2.5 packs cost $1.29 a pack. Tax is 5%. What is the total cost?

Answer 1

SOLUTION:

Step 1:

In this question, we are given the following:

The note cards in 2.5 packs cost $1.29 a pack.

Tax is 5%.

What is the total cost?​

Step 2:

Recall that:

$\begin{gathered} 1\text{ pack = \ 1. 29} \\ 2.\text{ 5 packs = \ (1.29 x 2.5 ) = \ 3. 225} \\ \text{Now, if Tax is 5\%,} \\ \text{Then, the total cost = (100 + 5 ) \% of \ 3. 225} \\ =\text{ 105 \% of \ 3. 225} \\ =\text{ }\frac{105}{100}\text{ X \ 3.225} \\ =\text{ }\frac{338.625}{100} \\ =\text{ \ 3. 38625} \\ \approx\text{ \ 3.39 ( to 2 decimal places)} \end{gathered}$