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bambi21
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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?
 2 years ago
 2 years ago
bambi21 Group Title
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?
 2 years ago
 2 years ago

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IanT Group TitleBest ResponseYou've already chosen the best response.0
j = 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.
 2 years ago

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

IanT Group TitleBest ResponseYou've already chosen the best response.0
Okay, 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.
 2 years ago

seekevinella Group TitleBest ResponseYou've already chosen the best response.1
13 is the answer
 2 years ago

Coyzita Group TitleBest ResponseYou've already chosen the best response.0
Coach is 13 years old
 one year ago

mikaa_toxica13 Group TitleBest 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 ??????
 one year ago
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