When one boy is sitting 1.20m from the center of a seesaw, another boy must sit on the other side 1.59m from the center to maintain an even balance.
However, when the first boy carries an additional weight of 14kg and sit 1.80m from the center, the second boy must move to 3m from the center to balance.
Neglecting the weight of the seesaw, find the weight of the heavier boy.