Question

when a person selling an article for rs.400he loses 20% then find the cost price of an article​

Answer 1

Answer:

Let cp of an artcle be Re x.

sp = ₹ 400

loss % = 20 %

Using formula

$cp = \frac{sp \times 100}{100 - loss\%} \\ x = \frac{400 \times 100 }{100 - 20} \\ x = \frac{40000}{80} \\ x = 500$

Answer 2

Refer the attachment above ..

Hope it Helps !!