What does this problem teach you about physics? Nothing.
Use algebra.
R = Ray's weight
S = Sis' weight
D = Dad's weight
R = 3S
D = 2R = 6S
S + 3S + 6S = 10S = 400
Take it from there.
Ray's weight is 3 times the weight of his sister. His dad weighs twice as much as Ray. Their total weight is 400 pounds. How much does each person weigh?
1 answer