capegimi
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Numerical Ability
Age Problem
if systems of equations,3x(a+1)+9y(2-a)=30 and 2x(2-a) +3y(2a-1)=10,has infinite solutions,what is the value of a?
a)1 b)0 c)2 d)-1 e)-5 f)-2
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- a=1 by equating coefficients of the equation
- 7 years agoHelpfull: Yes(1) No(0)
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