Answer:
For the first case:
Loss% = ( Cost Price -Selling Price)/Cost Price x 100
Cost Price = CP = ?
Selling Price = SP = Rs. 1275
Loss% = 15%
So:
For the second case:
Gain% = (Selling Price - Cost Price)/Cost Price x 100
Loss% = 15%15 = (CP - 1275)/CP x 100
15CP = 100CP - 127500
15CP - 100CP = - 127500
- 85CP = - 127500
CP = 127500/85 = Rs. 1500.
For the second case:
Cost Price = CP = Rs. 1500
Selling Price = SP = ?
Profit% = 10%
So:
Gain% = (Selling Price - Cost Price)/Cost Price x 100
10 = (SP - 1500)1500 x 100
15000 = 100SP - 150000
100SP = 150000 + 15000 = 165000
SP = 165000/100 = Rs. 1650.
Ans: Rs. 1650.