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bambi21
 4 years ago
Coach Johnson is 10 years older than Tim. When Tim started football 3 years ago, Coach Johnson was twice his age. How old is Tim now?
bambi21
 4 years ago
Coach Johnson is 10 years older than Tim. When Tim started football 3 years ago, Coach Johnson was twice his age. How old is Tim now?

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IanT
 4 years ago
Best ResponseYou've already chosen the best response.0j = coach johnson's age t = tim's age Coach Johnson is 10 years older than Tim j = t + 10 When Tim started football 3 years ago, Coach Johnson was twice his age t  3 = (j  3)/2 And then you have simultaneous equations. j = t + 10 t  3 = (j  3)/2 Good luck.

kpopguy
 4 years ago
Best ResponseYou've already chosen the best response.0idk why but i cant solve it.

IanT
 4 years ago
Best ResponseYou've already chosen the best response.0Okay, how about use substitution. You know from that first equation what j is; j = t + 10 replace j with (t + 10) in the second equation. so instead of t  3 = (j  3)/2 you have t  3 = ((t + 10)  3)/2 Now solve for t and you can find out what t is.

mikaa_toxica13
 2 years ago
Best ResponseYou've already chosen the best response.0????????? i get that this a very old question but i have a question for @Coyzita . how is the coach 13 years old ??????
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