The difference between the selling prices of a keyboard at losses of 15% and 25% is Rupees 50. What is the cost price?
- Rupees 500
- Rupees 240
- Rupees 330
- Rupees 300
Show answer and solution
Correct answer: A. Rupees 500
1. SP at 15% loss = 0.85 x CP; SP at 25% loss = 0.75 x CP.
2. Difference = 0.85CP - 0.75CP = 0.10 x CP = 50.
3. CP = 50 / 0.10 = 500.
_Source: RRB Group D CEN-02/2018 PYQ, Q.77._