Is it C?
Let P the principle invested with rate x for a time t (fraction of 12 months)
then 60000-P will be invested with y for time 1-t
4080 = P* 1 * x/100 + (60000-P)*1*y/100 ---- (1)
1) x = 3/4y ----(2)
Don't know P cannot solve the eqn. INSUFF.
2) P*1*x/(60000-P)*1*y = 3/2 . ----(3)
Don't know x & y.
From (2)&(3), we can obtain P.
From (2), P & (1) we can solve for x.
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