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CS Professional · Banking and Insurance - Laws and Practice · Calculation of Interest and Annuities

A trust wants to pay a scholarship of Rs 12,000 every year forever, with the first payment one year from now. The relevant interest rate is 8% p.a. What sum must be set aside today, and what is this type of annuity called?

The trust must set aside Rs 1,50,000, because an unending annual payment is a perpetuity whose present value is the payment divided by the interest rate: 12,000 divided by 0.08. It is not a deferred annuity or annuity due.

  1. ARs 1,50,000; perpetuityCorrect
  2. BRs 96,000; annuity due
  3. CRs 1,62,000; perpetuity due
  4. DRs 1,50,000; deferred annuity

Explanation

A payment stream that continues indefinitely is a perpetuity. PV = payment / rate = 12,000 / 0.08 = Rs 1,50,000. Check: 1,50,000 x 8% = 12,000. Rs 1,62,000 adds one payment up front, which applies only if the first payment were immediate.

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