write a system of equations to model the situation. solve by any method.
Sarah is 25 years older than her son gavin. In ten years, SArah willb e twice Gavin's age. How old are sarah and gavin now?

Question

write a system of equations to model the situation. solve by any method.
Sarah is 25 years older than her son gavin. In ten years, SArah willb e twice Gavin's age. How old are sarah and gavin now?

anonymous · Answer

s = g + 25               (s + 10) = 2(g + 10)

Those are the simultaneous equations.  Can you solve them from here?

anonymous · Answer

yes,i believe i can try! thank you very much!

anonymous · Answer

If you substitute the first equation into the second:

(g + 25) + 10 = 2(g + 10)

g + 35 = 2g + 20

g = 15      so     s = 40

anonymous · Answer

You're welcome!  Good luck!

anonymous · Answer

Good luck and thx for the recognition!

anonymous · Answer

thank you and you deserve it!