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Question

M and N start a business. M invests ₹24,000 more than N for 3 months and N invests for 4 months. M's share is ₹962 more than that of N, out of a total profit of ₹7,696. Find the capital contributed by M.

This question was previously asked in
RRB NTPC 2024 CBT 1 Question Paper (28-Aug-2025) (Shift 3)
The correct answer is
₹57,600

Calculate Profit Shares

Let M's profit share be PM and N's profit share be PN. The total profit is ₹7,696.

  • The sum of their shares is the total profit:

    $ P_M + P_N = 7696 $

  • M's share is ₹962 more than N's:

    $ P_M = P_N + 962 $

  • Substitute the second equation into the first:

    $ (P_N + 962) + P_N = 7696 $

    $ 2P_N + 962 = 7696 $

    $ 2P_N = 7696 - 962 = 6734 $

    $ P_N = \frac{6734}{2} = 3367 $

  • Calculate M's share:

    $ P_M = 3367 + 962 = 4329 $

M's profit share is ₹4,329 and N's profit share is ₹3,367.

Establish Profit Ratio Equation

Let the capital invested by N be CN and by M be CM.

  • M invested ₹24,000 more than N:

    $ C_M = C_N + 24000 $

  • M invested for 3 months and N for 4 months. Profit is shared based on the product of capital and duration (Investment $\times$ Time).
  • The ratio of their profit shares is equal to the ratio of their investment products:

    $ \frac{P_M}{P_N} = \frac{C_M \times 3}{C_N \times 4} $

  • Substitute the calculated profit shares and the relation between capitals:

    $ \frac{4329}{3367} = \frac{(C_N + 24000) \times 3}{C_N \times 4} $

Simplify Ratio and Solve for N's Capital

First, simplify the profit ratio $\frac{4329}{3367}$. Both numbers are divisible by 481:

  • $ \frac{4329}{481} = 9 $
  • $ \frac{3367}{481} = 7 $
  • So, the ratio is $\frac{9}{7}$.

The equation becomes:

  • $ \frac{9}{7} = \frac{3(C_N + 24000)}{4C_N} $
  • Cross-multiply:

    $ 9 \times 4C_N = 7 \times 3(C_N + 24000) $

    $ 36C_N = 21(C_N + 24000) $

    $ 36C_N = 21C_N + 21 \times 24000 $

    $ 36C_N = 21C_N + 504000 $

  • Isolate CN:

    $ 36C_N - 21C_N = 504000 $

    $ 15C_N = 504000 $

    $ C_N = \frac{504000}{15} = 33600 $

N's capital contribution is ₹33,600.

Calculate M's Capital Investment

Use the relationship between M's and N's capital:

  • $ C_M = C_N + 24000 $
  • $ C_M = 33600 + 24000 $
  • $ C_M = 57600 $

M's capital contribution is ₹57,600.

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Similar Questions

  1. P, Q and R started a business investing amounts of ₹2,030, ₹1,700, and ₹1,010, respectively. If Q's share in the profit earned by them is ₹975. what is the difference in the profit (in ₹) earned by P and R?
  2. Anshuman and Kunal together invested ₹36,400 in a business. At the end of the year, out of a total profit of ₹19,500, Kunal's share was ₹6,300. What was the difference between their investments?
  3. P, Q and R invested a sum in the ratio of 12 : 82 : 38, respectively. If they earned a total profit of ₹3,510 at the end of year, what is the difference between the shares of Q and R?
  4. P, Q and R invest a sum in the ratio of 59 : 14 : 72, respectively. If they earned a total profit of ₹4,790 at the end of the year, what is the difference between the shares of Q and R?
  5. Ritu, Sameer, and Isha invest ₹1,190, ₹1,060, and ₹1,350, respectively, to start a business. If the profit at the end of the year is ₹1,640, then what is the share of Isha in the profit?
  6. Salman and Vivek together invested ₹33,900 in a business. At the end of the year, out of a total profit of ₹10,000, Vivek's share was ₹3,700. What was the difference between their investments?
  7. A company earns a profit (in ₹) that is distributed among the company's three partners in the ratio of 14 : 10 : 16. If the difference between the smallest and the largest shares is ₹29,547, the total profit (in ₹) of the company is:
  8. M and N started a business. M invested ₹48,000 more than N for 3 months, while N invested for 4 months. M's share is ₹498 more than that of N, out of a total profit of ₹1,494. Find the capital contributed by M.
  9. Two partners A and B started a business with the capitals of ₹12,000 and ₹18,000 respectively and made a profit of ₹1,800 at the end of the $1^{\text{st}}$ year. Find the profit share of B.
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Important Questions from Partnership

  1. Three partners X, Y and Z started their business by investing ₹40,000, ₹38,000 and ₹30,000, respectively. After 6 months, X and Z made additional investments of ₹20,000 and ₹15,000 respectively, whereas Y withdrew ₹8,000. Find the share of Y (in ₹) in the total profit of ₹38,880 made at the end of the year.

  2. A, B and C invested their capitals in the ratio 2 ∶ 3  ∶ 5. The ratio of months for which they invested is 4 ∶ 2 ∶ 3, respectively. If the difference between the profit shares of A and B is Rs. 1,86,000, then C's share of profit (in Rs.) is:

  3. A started a business with a capital of Rs. 54,000 and admitted B and C after 4 months and 6 months, respectively. At the end of the year, the profit was divided among the three in the ratio 1 ∶ 4  ∶ 5. What is the sum (in Rs.) of the capitals invested by B and C?

  4. A, B and C started a business in partnership. Initially, A invested Rs. 29,000, while B and C invested Rs. 25,000 each. After 4 months, A withdrew Rs. 3,000. After 2 more months, C invested Rs. 12,000 more. Find the share of C( in Rs.) in the profit of Rs. 33,200 at the end of the year.

  5. A, B and C invest in a business in the ratio 4 ∶ 5 ∶ 7. C is a sleeping partner, so his share of profits will be half of what it would have been if he were a working partner. If they make Rs 36,000 profit of which 25% is reinvested in the business, how much does B get (in Rs)?

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