Answer:
The $125 off coupon
Explanation:
Finding which coupon she should use depends on how much money she would save using each of them. The second coupon gives her $125 off the price. The other coupon requires multiplying the percentage by the original cost to determine how much money she will be saving.
$200 * 55%
$200 * 0.55
$110
She will save $110 with the 55% off coupon.
$125>$110
Since she will save more money with the $125 off coupon, she should then use the $125 off coupon.