Mohan invested Rs. 100,000 in a garment business. After few months, Sohan joined him with Rs. 40000. At the end of the year, the total profit was divided between them in ratio 3 : 1. After how many months did Sohan join the business?
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This problem involves calculating the duration of investment in a business partnership based on the profit-sharing ratio. In a partnership, profits are typically divided among partners in proportion to the product of their investment amount and the time period for which the investment was made.
When partners invest different amounts for different durations, the share of profit for each partner is determined by the ratio of their respective (Investment × Time) values. The formula used is:
$$ \frac{\text{Profit}_1}{\text{Profit}_2} = \frac{\text{Investment}_1 \times \text{Time}_1}{\text{Investment}_2 \times \text{Time}_2} $$
In this scenario, we have two partners, Mohan and Sohan.
We can summarize the information in a table:
| Partner | Investment (Rs.) | Time in Business (Months) | Profit Ratio Share |
|---|---|---|---|
| Mohan | 100,000 | 12 | 3 |
| Sohan | 40,000 | $x$ | 1 |
Using the formula for profit sharing based on Investment × Time:
$$ \frac{\text{Mohan's Profit}}{\text{Sohan's Profit}} = \frac{\text{Mohan's Investment} \times \text{Mohan's Time}}{\text{Sohan's Investment} \times \text{Sohan's Time}} $$
Substitute the given values:
$$ \frac{3}{1} = \frac{100000 \times 12}{40000 \times x} $$
Now, we solve the equation to find the value of $x$, which represents the number of months Sohan was in the business.
$$ 3 = \frac{100000 \times 12}{40000 \times x} $$
We can simplify the fraction on the right side by canceling out common factors.
$$ 3 = \frac{100 \times 12}{40 \times x} $$
$$ 3 = \frac{10 \times 12}{4 \times x} $$
$$ 3 = \frac{120}{4x} $$
Cross-multiply:
$$ 3 \times 4x = 120 $$
$$ 12x = 120 $$
Divide by 12:
$$ x = \frac{120}{12} $$
$$ x = 10 $$
This means Sohan's investment was in the business for 10 months.
The question asks "After how many months did Sohan join the business?". The total duration is one year, which is 12 months. If Sohan was in the business for the last 10 months of the year, he must have joined after the first $12 - 10$ months.
Number of months after which Sohan joined = Total time - Sohan's time in business
Number of months after which Sohan joined = $12 - 10 = 2$ months.
Therefore, Sohan joined the business after 2 months.
| Concept | Description |
|---|---|
| Partnership | A business structure where two or more individuals agree to share in the profits or losses of a business. |
| Profit Sharing Ratio | The agreed-upon proportion in which profits are divided among partners. |
| Investment × Time | The product used to determine each partner's effective contribution when investments are made for different durations. Profit shares are proportional to this value. |
Understanding partnership dynamics is crucial for solving such problems. Here are some related concepts:
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