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Answer:
The saving amount on selling of three books together after discount of 20% is $2.69
Step-by-step explanation:
Given as :
The original price of first book = $2.50
The original price of second book = $4.95
The original price of third book = $6.00
The total percentage discount on the book = d = 20%
Let The saving money after purchased of book = $x
And Let the selling price of the book = s.p = $y
<u>Now, According to question</u>
The total market price of three books = m.p = $2.50 + $4.95 + $6.00
I.e m.p = $13.45
<u>Now, from discount formula</u>
Discount % =
Or, d% =
Or, 20% =
Or, =
Or, 20 × 13.45 = (13.45 - y) × 100
Or, 269 = 1345 - 100 y
Or, 100 y = 1345 - 269
Or, 100 y = 1076
∴ y =
i.e y = $10.76
So, The selling price of three books = y = $10.76
∴ The saving amount on selling of three books together after discount of 20% = x = Total market price - Selling price
i.e x = m.p - y
or, x = $13.45 - $10.76
or, x = $2.69
Hence ,The saving amount on selling of three books together after discount of 20% is $2.69 Answer