Question

A sells an article to b at a profit of 20%. if b pays $180 for it, what was the cost of the article for "a'

Answer 1

let cost of article 'a' be= Y
profit on 'a'= Yx20/100= Y/5
Profit= S.P - C.P
Y/5= 180-Y
Y/5+Y= 180
(Y+5Y)/5 =180
6Y= 180x5
Y= 150
Cost of article 'a' = $150 Ans

Answer 2

Step-by-step explanation:

CP of A=X

A sells to B=120x/100

B sells to c=(120x/100)*(115/100)

Given,

(138x/100)=190+x

(38x/100)=190

X=500

A sells to B=(120*500)/100

=600

Profit to A= 600-500=100