A watch was sold at a profit of 10%. Had it been sold at rs 77 more the profit percent would have been 12% . The cost price of the watch is :
एक घड़ी 10% के लाभ पर बेची गयी | यदि इसे 77 रुपये अधिक पर बेचा जाता तो लाभ का प्रतिशत 12% होता| इस घड़ी का क्रय मूल्य ज्ञात करें |

Options

A. rs 3,760
B. rs 3,850
C. rs 3,945
D. rs 3,900

Answer

B