If the original price of Dima’s skirt was $54, the amount that she have saved at the store was option(b)i.e, $1.80.
Let's just take the sales price of the skirt Dima purchased from the discount shop as the rate of the other retailer is not provided.
Original price: $54
Discount rate: 30%
$54 x 30% = $16.20 value of the discount
$54 - 16.20 = $37.80 discounted price.
Since Dima's friend told her she could have had a better deal at a different store, this means that the discount rate is higher than 30%. i.e, the discount is 33.33%
$54 x 33.33% = $17.99 value of the discount
$54 - 17.99 = $36.00 discounted price.
Discount store: $37.80
Different store: $36.00
The different store sales price is cheaper by $1.80
Therefore, she could have saved $1.80 at the store her friend suggested.
To know more about discount rate refer to: brainly.com/question/13660799
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