Question

$400$ sheets were bought at Rs. $125$ per hundred and were sold at a profit of Rs. $100$. The selling price per dozen is :

• A. Rs. $12$
• B. Rs. $15$
• C. Rs. $16$
• D. Rs. $18$
• E. None of these

Answer 1

The correct option is D Rs. $18$

Total cost price of sheets $=4\times 125=Rs.500$
Total selling price $=500+100=Rs.600$
So,
Selling price of $400$ sheets $=Rs.600$
Selling price of 1 sheet $=\frac{600}{400}$
Selling price of 12 sheets $=\frac{600\times 12}{400}=Rs.$18$.