Question

Revisit
Question #9
The price of an article becomes Rs 63 after a decrease of
30%. Find the original price (in Rs.)
Choose the best option
100
96
90
80​

Answer 1

Given,

The price of an article becomes Rs 63 after a decrease of 30%.

To find,

The original price of the article.

Solution,

We can simply solve this mathematical problem using the following process:

Let us assume that the original price of the article is Rs. x.

Mathematically,

p% of a number A is calculated as follows;

(p/100)×A

{Statement-1}

Now, according to the question;

The total decrease in the original price of the article

= 30% of the original price

= 30% of x

= 30/100 × x

{according to statement-1}

= 3x/10

Now, according to the question;

(original price of the article) - (total decrease in the original price of the article) = (final price of the article)

=> Rs. x - Rs. 3x/10 = Rs. 63

=> (10x-3x)/10 = 63

=> 7x = 630

=> x = 90

=> original price of the article = Rs. 90

Have, the original price of the article is equal to Rs. 90.