If the marked price of the article is Rs. 720 and two successive discount of x% are offered. A total discount of 259.2 is offered then what is the value of x?
Discount % offered = x
Let y =100 -x
A/c to question ,
$$\frac{y^2}{100^2} \times 720 = 720 - 259.2$$
y = 80
x = 100 - 80 = 20
So, the answer would be option c)20.
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