When one boy is sitting 1.2 m from the center of a see-saw, another boy must to sit on the other side 1.5 m from the center to maintain an even balance. However, when the first boy carries an additional weight of 14 kg and sit 1.8 m from the center, the second boy must move to 3 m from the center to balance. Neglecting the weight of the see-saw, find the weight of the heavier boy.
- A. 30 kg
- B. 42 kg
- C. 34 kg
- D. 45 kg
The weight of the heavier boy is 42 kg.Solution: