Question

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

Answer 1

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{ }(105)/(100)\text{ X \$ 3.225} \\ =\text{ }(338.625)/(100) \\ =\text{ \$ 3. 38625} \\ \approx\text{ \$ 3.39 ( to 2 decimal places)} \end{gathered}`