22.A man buys a watch for Rs.1950 in cash and sells it for Rs.2200 at a credit of 1 year. If the rate of interests is 10% per annum, the man
A. gain Rs.55 B. gain Rs.30
C. loses Rs.30 D. gains Rs.50
Answer:D
S.P =P.W. of Rs.2200 due 1 year
= Rs.[2200×100/100+(10×1)]
= Rs.2000.
Gain =Rs.(2000 - 1950)
= Rs.50.
