Question

find the C. P when S. P=₹12,Gain20%​

Answer 1

Answer:

Let CP=x

SP=CP+

100

P

×CP

12=x+

100

20

×x

12=x+

5

x

Solve to get x=10Rs

∴CP=10RS

ii) Let CP=y

∴SP=CP−

100

L

×CP

360=y−

100

10

×y

360=y−

10

y

Solve to get y=400Rs

∴CP=400Rs

Answer 2

Answer:

Step-by-step explanation:

Given :

SP = Rs. 12

Gain % = 20 %

CP = ?

Solution :

SP = (100 + Gain %) / 100 X CP

Rs. 12  = (100 + 20) / 100 X CP

Rs. 12 = 120 / 100 X CP

After Simplification,

Rs. 12 = 6 / 5 X CP

6CP = Rs.12 X 5

6CP = Rs.60

CP = Rs. 60 / 6

CP = Rs.10

Therefore , CP is Rs.10