InterviewSolution
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1). 10 : 15 : 202). 6 : 7 : 83). 6 : 4 : 34). 28 : 24 : 21 |
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Answer» Let us assume money invested on scheme X, Y and Z be Rs. x, y and z respectively Also assuming interest GAIN by Dharmesh from each scheme be α We know the formula for simple Interest, SI = (P × R × T)/100 Where, SI = Simple Interest P = Principle R = Rate of Interest t = Time period ∴ Interest gain from scheme X = (x × 4 × 7)/100 = α ⇒ x = 100α/28 Similarly Interest gain from scheme Y = (y × 6 × 4)/100 = α ⇒ y = 100α/24 And Interest gain from scheme Z = (z × 7 × 3)/100 = α ⇒ z = 100α/21 ∴ x : y : z = 100α/28 : 100α/24 : 100α/21 We know that, A : B : C = nA : nB : nC Where n is a constant ∴ By MULTIPLYING Right hand side RATIO by 42/25 we GET, ⇒ x : y : z = 6 : 7 : 8 |
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