A man sold his watch at a loss of 5%. Had he sold it for Tk. 25 more he would gained of 10%. The cost price of the watch-

A Tk 250

B Tk 375

C Tk. 280

D None of these

Correct Answer: Option B

এখানে,

Let us think that the cost price of the watch is 100

With 5% loss, the man sold his watch at (100-5) taka

= 95 taka

With 10% gain, he could have sold his watch at (100+10) taka

&nbs