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please help me with my question

Sagot :

Given the following options;

- 5% off before taxes

- getting a rebate of $20 after taxes

- getting a discount of $18 before tax.

Let us evaluate the final cost for each of the options, given that the couch costs $379.00 and sales tax 8%.

1. 5% off before taxes;

[tex]\begin{gathered} C_1=379\times0.95\times1.08 \\ C_1=\text{ \$388.85} \end{gathered}[/tex]

2. getting a rebate of $20 after taxes;

[tex]\begin{gathered} C_2=379\times1.08-20 \\ C_2=409.32-20 \\ C_2=\text{ \$}389.32 \end{gathered}[/tex]

3. getting a discount of $18 before tax.;

[tex]\begin{gathered} C_3=(379-18)\times1.08 \\ C_3=\text{ \$389.88} \end{gathered}[/tex]

From the three options, the option that gave the least final cost is option 1.

Therefore, the best deal is;

The coupon for 5% off before taxes