Respuesta :
Let the price of book x. That's the cost the book dealer.
He wants to earn some money while selling it, so he listed the book by a new price, 91 $
He added two-fifth (2/5) price to its initial price. In other words, its new price is 40 % more expensive. (2/5 = x /100)
Here is the equation in words,
initial price + 2/5 of the initial price = 91
by equation: x + 2/5 x =91
multiply both sides by 5, to eliminate the denominator:
5x +2x = 91.5 ; 7x = 455
divide both sides by 7 to simply coefficient of x: x= 65
The answer is 65$.
He wants to earn some money while selling it, so he listed the book by a new price, 91 $
He added two-fifth (2/5) price to its initial price. In other words, its new price is 40 % more expensive. (2/5 = x /100)
Here is the equation in words,
initial price + 2/5 of the initial price = 91
by equation: x + 2/5 x =91
multiply both sides by 5, to eliminate the denominator:
5x +2x = 91.5 ; 7x = 455
divide both sides by 7 to simply coefficient of x: x= 65
The answer is 65$.
Answer:
The cost to book dealer is $65
Step-by-step explanation:
Given : The price of an antique book is $91.
The price is two - fifth more than the cost to book dealer.
To Find : Cost.
Solution :
Let the cost to book dealer be x
The price of an antique book is $91.
Two - fifth of the dealer cost : [tex]\frac{2}{5}x[/tex]
Since we are given that price is two - fifth more than the cost to book dealer.
⇒[tex]x+\frac{2}{5}x=91[/tex]
⇒[tex]\frac{7}{5}x=91[/tex]
⇒[tex]x=\frac{91*5}{7}[/tex]
⇒[tex]x=\frac{455}{7}[/tex]
⇒[tex]x=65[/tex]
Hence , The cost to book dealer is $65