Question

What more % an article,so that after giving the discount 20%,he got always gain of 20%.

Answer 1

Given:

• Discount = 20%
• Gain = 20%

To Find:

• What more% an article?

Solution:

Let the increase value=x%

According to the question –

(100-20)%of (100+x) = 100+ 20

$\sf \rightarrow \: (100 + x) \times \frac{80}{100} = 120 \\ \\ \sf \rightarrow \: 100 + x = \frac{120 \times 100}{80} = 150 \\ \\ \sf \rightarrow \: x = 50 \%$

• Hence, the % of an article = 50%.