A vendor sold 25 laptops at a profit of 12% and 15 laptops at a profit of 20%. If he had sold all the 40 laptops at a profit of 18%, his profit would have increased by 230,000. What is the cost price of each laptop, if the cost price of all the 40.
laptops is the same?
A₹28,000
B₹25,000
C₹26,000
D₹27,000