A costs thrice as much as B. A is sold at a loss of 10%, and B is sold at of its own price. If the selling price of A is ₹5,800 more than the selling price of B, then the cost price of A is:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. ₹12,000.
Let the cost price of B be 100x.
⇒ CP of A = 300x
Now, SP of A = 300x × 90/100 = 270x
Also, SP of B = (5/4) × 100x = 125x
According to the given question,
270x - 125x = 5800
⇒ 145x = 5800
⇒ x = 40
Now, CP of A = 300x
⇒ 300 × 40 = 12000