Homework Help: math

Posted by gt on Wednesday, November 4, 2009 at 1:25pm.

Chad was the same age as Shelly, and Holly was 4 years older than both of them. Chad's dad was 20 when Chad was born, and the average age of the four of them is 39. How old is Chad?

math - Ashley, Wednesday, November 4, 2009 at 1:35pm
try 2x+(x+4)+(x+20)=39. Solve for x and it should give you chads age

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