Question

The selling price of 12 articles is equal to the cost 15 articles. The gain per cent is

Answer 1

Solution

Let CP of each article be Rs. 1
CP of 12 article = Rs.12, SP of 12 article = Rs.15

Gain = (3/12 *100)% = 25 %

Answer 2

Solutions :-


Given :
The selling price of 12 articles is equal to the cost 15 articles.

Find the LCM of 12 and 15

LCM of 12 and 15 = 60


Therefore,
Selling price of 12 articles = Rs 60
Selling price of 1 article = 60/12 = Rs 5

Cost Price of 15 articles = Rs 60
Cost Price of 1 article = 60/15 = Rs 4


Selling price is greater than the Cost price. Therefore, Gain.

Gain = S.P - C.P
= Rs (5 - 4)
= Rs 1


Gain % = (gain × 100)/C.P %
= (1 × 100)/4 %
= 100/4 %
= 25%


Hence,
Gain Percent = 25%