Question

If the cost price of 10 greeting cards is equal to the selling price of 8 greeting cards, find the gain or loss percent.

Answer 1

Answer: 25%

Step-by-step explanation:

Let the cost price of 1 greeting card be Re. 1

Cost price of 1-0 Greeting Cards = Rs.10

Since we are given that the cost price of 10 greeting cards is equal to the selling price of 8 greeting cards.

So, S.P. of 8 cards = rs.10

C.P. of 8 cards = Rs.8

Since S.P.> C.P.

So, Profit Case

Profit = S.P. - C.P. = 10 - 8 = Rs. 2

Profit % =  

Profit % =      

Profit % =      

Hence the gain % is 25 %

Answer 2

Answer:

25% Gain

Step-by-step explanation:

Let the cost price of each card be Rs x.

Then, CP of 8 cards = Rs 8x

SP of 8 cards = CP of 20 cards = Rs 10 x

Thus, CP = Rs 8x and SP = Rs 10x

Since (SP) > ( CP), there is a gain.

Gain = Rs (10x - 8x) = Rs 2x

Gain% = $( \frac{gain}{cp} \times 100)$

= $( \frac{2x}{8x} \times 100)\% = 25\%$