If your weight on Earth is 38 kg, what will be your weight on the planet Mercury?
14.3 kg
14.3 kg is correct.
Mass stays the same everywhere, but weight depends on the local gravity. Surface gravity on Mercury is about 0.38 times that on Earth (about 3.7 \(m/s^2\) against 9.8 \(m/s^2\)).
Weight on Mercury \(\approx 38 \times 0.376 \approx 14.3\) kg.
Hence, a person who weighs 38 kg on Earth would weigh about 14.3 kg on Mercury.