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Three years ago, Raman's salary was Rs. 45,000. His salary is increased by 10 percent, A percent and 20 percent in first, second and third year respectively. Raman's present salary is Rs. 83160. What is the value of A?
Answer & Solution
Correct Answer:
Option
A
$$\eqalign{
& 10\% = \frac{1}{{10}},\,A\% = \frac{A}{{100}},\,20\% = \frac{1}{5} \cr
& 45000 \times \frac{{11}}{{10}} \times \frac{{100 + A}}{{100}} \times \frac{6}{5} = 83160 \cr
& 100 + A = 140 \cr
& A = 40 \cr} $$
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