Answer:
c
Step-by-step explanation:
Let's calculate the gain or loss percentage for each watch individually:
1. For the watch sold at a 7% gain:
- Cost price (CP) = Rs 240
- Gain = 7% of Rs 240 = 0.07 * 240 = Rs 16.80
- Selling price (SP) = CP + Gain = 240 + 16.80 = Rs 256.80
2. For the watch sold at a 7% loss:
- Cost price (CP) = Rs 240
- Loss = 7% of Rs 240 = 0.07 * 240 = Rs 16.80
- Selling price (SP) = CP - Loss = 240 - 16.80 = Rs 223.20
Now, let's calculate the total cost price (TC) and total selling price (TS) for both watches:
- TC = 240 (for each watch) + 240 (for each watch) = Rs 480
- TS = 256.80 (for the gain) + 223.20 (for the loss) = Rs 480
Since the total cost price (TC) is equal to the total selling price (TS), there is neither a gain nor a loss in the whole transaction.
So, the correct answer is: c) 0.49% gain