Question

Denny has an option of choosing one coupon while purchaing a smartphone priced at $\$1200$ online. Which coupon should she choose in order to get the best deal ?

• A.
• B.

Answer 1

The correct option is B

First coupon:

The first coupon gives a direct discount is $\$100.$

Second coupon:
''10% off'' means saving 10% on the original price.

Let's find 10% of $\$1200.$

$10\%\text{of}\$1200=\frac{10}{100}\times \$1200$
$=\frac{10}{10\times 10}\times \$1200$
$=\frac{1}{10}\times \$1200$
$=\frac{\$120\times 10}{10}$
$=\$120$


Let's compare the coupons:

The first coupon saves $\$100$ and the second coupon saves $\$120.$

Hence, the second coupon will save Denny more money. Using the second coupon is the best deal.