Question

If the cost price of 40 articles is equal to the selling price of 30 articles. Find the gain $\%$.

• A. $12 \frac{1}{2} \%$
• B. $16 \frac{2}{3} \%$
• C. $33 \frac{1}{3} \%$
• D. None

Answer 1

Answer: (C)

Let cost price of each article be Rs. 1
Cost price of each 40 article $=$ Rs. 40
Cost price of each 30 article $=$ Rs. 30
Selling price of each 30 article $=$ Rs. 40
Here, S.P > C.P
Then, gain $=$ Rs. $(40-30)=$ Rs. 10
Gain $\%=\frac{10}{30} \times 100=\frac{100}{3}=33 \frac{1}{3} \%$