| Calculator | Pen |
| Shopkeeper | Cost Price | Profit & Loss% | Marked Price | Selling Price | Discount% | Cost Price | Profit & Loss% | Marked Price | Selling Price | Discount% |
| Gopal | 5R | -- | 7.5R | -- | 20% | 5R | -- | 8R | -- | 50% |
| Mohan | 2R | -- | 3R | -- | --- | 5R | -- | 7.5R | -- | 20% |
| Sohan | -- | +60% | -- | -- | 20% | 6R | -- | 13.5 R | -- | 50% |
CP denotes Cost Price.
MP denotes Marked Price.
SP denotes Selling Price.
If MP of calculator is 150 unit. So, CP will be 100 unit.
Its SP is increased by 20% means ratio of initial and new SP is = R: 6/5R
And increased MP is 30% of initial MP so new MP will be= 150 *130/100=195 unit.
Initial Profit (SP - CP) = R-100
New profit= 6/5R-100
According to Questions:
(R-100) * 2 = [(6R/5)-100]
R= 125 unit = Initial SP
MP is 150 unit.
Old SP = 125 unit.
150 unit = Rs.300
1 unit = Rs.2
125 unit = 125 * 2 = Rs.250
Initial SP will be Rs.250
Study Notes
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