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Question

A man has a Recurring Deposit Account in a bank for 31/2years. If the rate of interest is 12% per annum and the man gets Rs.2,892 on maturity, find the monthly installment.

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Solution

Maturity value =P×n+P×n(n+1)2×12×r100

P=monthly deposit

n= number of months =312years=42 months

r= rate of interest 12

2892=P×42+P×42(42+1)2×12×12100

2892=42P+P×42×432×100

2892=42P(1+432×100)

2892=42P(1.215)

P=Rs.56.67 is the monthly deposit.

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