For what value of u, is a and b equal if a=4-u and b= 3u-5  ?

a.  9/4          b. 4/9             c. 1/3                   d.    3/7

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dineshAptitude
For what value of u, is a and b equal if a=4-u and b= 3u-5  ? a.  9/4          b. 4/9             c. 1/3                   d.    3/7