A dishonest dealer claims to sell his goods at a $10\%$ profit on the cost price, but he uses a weight of $800$ grams instead of $1$ kg. Find his overall profit percentage.

Options:

• A: $37.5\%$
• B: $30\%$
• C: $42.5\%$
• D: $45\%$

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?