Question

If the discount on an item is $10\%$, an item bought for Rs. 9 is priced at _____.

• A. Rs. 11
• B. Rs. 10
• C. Rs. 8.10
• D. Rs. 12

Answer 1

The correct option is B

Rs. 10

Let C.P. be Rs. x. Then,
$S.P.=x-\frac{10x}{100}=\frac{90x}{100}$
But S.P. = 9
So, $\frac{90x}{100}=9$
$x=10$