Question

Find the C.P. for each of the following.
M-S.P. = 12; profit = 20%​

Answer 1

Step-by-step explanation:

Find the C.P., when

(i) S.P. = Rs. 12 ; gain=20%

(ii) S.P. = Rs. 360; loss=10%

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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:

₹10

Step-by-step explanation:

S.P. = ₹ 12

Gain = 20 %

C.P. =   ?

We know that SP = [1 + p / 100 ] CP

₹ 12 = [1 + 20 / 100 ] CP

₹12 = [120 / 100 ] CP

₹12 * 100 / 120 = CP

₹10 = Answer