Please help me solve
Rob is 2 more than 3 times teds age. Four years ago rob was 5 times teds age. How old is rob?

Question

Please help me solve 
Rob is 2 more than 3 times teds age. Four years ago rob was 5 times teds age. How old is rob?

australopithecus · Answer

2 + 3(x) = y
5(y) - 4 = x

where 
x =  Rob's age
y =  Ted's age

Use system of equations to solve

anonymous · Answer

How do you solv this thought

tkhunny · Answer

Maybe 5(y-4) = x-4?  The question does read a little ambiguously.

australopithecus · Answer

hmm yeah I might have gotten the last equation wrong, but it seems fine to me, because age increases in a linear fashion, so it shouldn't matter if I just subtract 4 from his age

australopithecus · Answer

To solve a system of equations 

sub one equation into the other equation
using:
2 + 3(x) = y 
so,
5(y) - 4 = x
becomes
5(2 + 3(x)) - 4 = x

now solve for x

once you have x sub that into one of the two original equations and solve for y

anonymous · Answer

Is the answer 26

australopithecus · Answer

Just follow my instructions and you will arrive at the right answer

anonymous · Answer

Ok