A dishonest dealer claims to sell his goods at cost price, but he uses a weight of $900$ grams for a $1$ kg weight. Find his gain percent.

Options:

• A: $10\%$
• B: $11.11\%$
• C: $12.5\%$
• D: $9\%$

Related Practice Questions:

• Why is copper considered highly pure and extensively used in religious rituals by Hindus today according to the historical context of natural resources?
• Which of the following regions is described by R.S. Sharma as "the most coveted and contested area" fought over by important ruling powers in northern India?
• Paper currency was not used in ancient India. In which century was paper currency finally introduced to India?
• The earliest agricultural settlements and states in ancient northern India were founded along the Himalayan foothills (the "terai" route) during which period?