An article was sold at 16% gain. Had it been sold for 200 more, the gain would have been 20%. Then the cost price of the article is :

Answer : Option A

Explanation :

If the C.P. of article be Rs. $x$, then $x \times \frac{116}{100}+200$ $=\frac{x \times 120}{100}$ $\Rightarrow x \times \frac{4}{100}=200$ $\Rightarrow x=\frac{200 \times 100}{4}=$ Rs. 5000 Alternative:

According to the question,

1 unit → 200

25 units → 200 × 25

= 5000