hi vishubn,
Sol for your 1st Qn;
I = (P*N*R)/100
I - Interest
P - Principle
N - No of years
R - Rate
600 = (d * 2 * k) / 100 ==> k = 30,000 / d
Say Principle = x dollars;
2400 = (x * 3 * k) / 100 ==> x = 80,000 / k ==> x = 80,000 / (30,000 / d) ==> 8d/3
Sol for your 2nd Qn;
(x * 1/100) + (y * 2/100) + (z * 3/100) = ((x+y+z) * (1.5/100))
solve the above equation to get;
x=y+3z
cheers
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VerbalAttack
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