A T.V. is sold at 8% gain. Had is been sold for Rs. 714 more, then the gain would have been 15%. To gain 18%, the selling price of the T.V. should be:

Answer: Option A

Solution

Answer: Option A

Solution:

$$8\%=\frac{2}{25}$$

$$\begin{array}{rl}& \to 25x\times \frac{23}{20}=27x+714\\ & 115x=108x+2856\\ & 7x=2856\\ & x=408\\ & \text{Cost price}=25x=25\times 408\\ & \text{So, required answer}\\ & =25\times 408\times \frac{59}{50}\\ & =12036\text{ Answer}\end{array}$$