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Aptitude · Q133

Compound Interest

Competitive Exams · Aptitude · question 133

Q133

If the cost of a mobile phone is Rs. 25,000, available at Rs. 5,000 down payment followed by 3 equal annual instalments (each instalment is to be paid at the end of each year) at the rate 25% p.a. compound interest, then find the value of each instalment (rounded off to two decimal places):

A.
Rs. 13,021
B.
Rs. 17,361
C.
Rs. 10,245.09
D.
Rs. 10,245.90
Answer

Answer: Option D

Solution

Answer: Option D
Solution:
Cash payment = 25000
Down payment = 5000
Remaining = 20000
Rate = 25% =
\begin{array}{*{20}{c}} {100 = 4 \times 25}&{5 \times 25 = 125} \\ {80 = 16 \times 5}&{25 \times 5 = 125} \\ {64 = 64}&{125 - 125} \end{array}
244 unit → 20000
1 unit → 81.9672
Each installment
125 unit → 125 × 81.9672 = 10245.90 Answer