Answer: Let's calculate the gain or loss for each mobile phone and then determine the overall gain or loss.
1. **First Mobile Phone (25% Gain):**
- Cost Price (CP): Rs. 24000
- Gain Percentage: 25%
Gain = (25/100) * 24000 = Rs. 6000
Selling Price (SP) = CP + Gain = 24000 + 6000 = Rs. 30000
2. **Second Mobile Phone (25% Loss):**
- Cost Price (CP): Rs. 24000
- Loss Percentage: 25%
Loss = (25/100) * 24000 = Rs. 6000
Selling Price (SP) = CP - Loss = 24000 - 6000 = Rs. 18000
Now, let's calculate the overall gain or loss:
Total CP = CP of the first phone + CP of the second phone
= Rs. 24000 + Rs. 24000
= Rs. 48000
Total SP = SP of the first phone + SP of the second phone
= Rs. 30000 + Rs. 18000
= Rs. 48000
Overall Gain or Loss = Total SP - Total CP
= Rs. 48000 - Rs. 48000
= Rs. 0
Therefore, Shivani neither gained nor lost in the whole transaction.
