Anonymous wrote:tkbday wrote:I can't figure this out to save my life. I have 2 boys that are brothers. One is a toddler. The two together have a mass of 74 kilograms. One mass is 6 kilograms more than 3 times the other's mass. What are there weight.
*Assign unknowns
*Translate the words into equations
*Solve the equations.
Let the toddler weigh x. We don't know what x is yet, but we can work with it. The other weighs 3x + 6
The two together weigh x + 3x + 6 =74,
or 4x = 68.
Now you can solve for x, the toddler weight and go back to the equation for the other.