Accounting

(d) Rs. 900

The ratio is $1 : 2 : 3$, and Bikram's 1 part is Rs. 300. Binita's share is $3 \times 300 = \text{Rs. } 900$.

(a) 625

For 2 years at 4%:

$SI = \frac{P \times 4 \times 2}{100} = 0.08P, \qquad CI = P(1.04)^2 - P = 0.0816P$

$CI - SI = 0.0016P = 1 \Rightarrow P = \frac{1}{0.0016} = 625$

The sum is Rs. 625.

(a) $100,000

The agent's commission is $10,000, which is 10% of the selling price:

$\text{Selling price} = \frac{10{,}000}{0.10} = USD 100{,}000$

(a) 6400

Let the amount in B be $x$, so the amount in A is $13900 - x$. Total simple interest for 2 years:

$\frac{28(13900 - x) + 22x}{100} = 3508 \Rightarrow 389200 - 6x = 350800 \Rightarrow x = 6400$

The amount invested in Scheme B is Rs. 6400.

4 years

Using $T=\dfrac{SI \times 100}{P \times R}=\dfrac{81 \times 100}{450 \times 4.5}=\dfrac{8100}{2025}=4$ years.