Posted by **i could not do it can u??** on Monday, February 25, 2013 at 1:28am.

a,b and c are real numbers such that ab=44, bc=112 and a+c=13. What is the value of b?

- algebra -
**Damon**, Monday, February 25, 2013 at 1:31am
a = 44/b

c = 112/b

so

44/b + 112/b = 13

156 = 13 b

b = 12

- algebra -
**Calvin Lin**, Tuesday, February 26, 2013 at 8:49pm
This is a problem posted by Brilliant (dot) org, which provides weekly problem sets for students to work on independently.

Please refrain from posting your solution for this student to copy.

-Calvin Lin

Brilliant Challenge Master

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