Question
Anjali puts Rs. 'a' in plan A and Rs. (a + 300) in plan B,
both for 5 years. Plan A gives 9% and plan B offers 6% simple interest. The total interest she earns from both is Rs. 2,700. Find the value of 'a'.Solution
ATQ,
Simple interest = Principal × Rate × Time ÷ 100
ATQ,
a × 9 × 5 ÷ 100 + (a + 300) × 6 × 5 ÷ 100 = 2700
→ 0.45a + 0.3a + 90 = 2700
→ 0.75a = 2700 - 90 = 2610
→ a = 2610 ÷ 0.75 = 3480
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