Answer:
631.75
Explanation:
here,
Selling price of watch ( S.P.)=Rs 665
loss percentage (L%)=5%
The cost price (C.P.)=?
Now,
Cost Price(C.P.)= S.P. - L% of S.P.
=Rs 665 - 5% of 665
=Rs 665 - 5÷ 100*665
=Rs 665 - 33.25
=Rs 631.75
The cost price of watch is Rs 631.75