Question 467837: Last Year, Raymond was twice as old as Sue
Answer by gwendolyn(128)   (Show Source):
You can put this solution on YOUR website! Let S=Sue's age
Let R=Raymond's age
We're talking about Raymond and Sue's age from last year. This means that their ages were reduced by one. This can be modeled as 'S-1' and 'R-1'
Raymond's age was double Sue's age, so this can be modeled in an equation as:
2(S-1)=R-1
If we distribute the two, we see that:
2S-2=R-1
Finally, we can add 2 to both sides of the equation.
2S=R+1
Since there is only one equation for two variables, we cannot solve for either of the people's ages.
|
|
|
