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Question

Q.P, Q and R were partners in a firm sharing profits and losses in the ratio of 3 : 4 : 1. On 31st March, 2022, R retired. R surrendered 1/3rd of his share in favour of P and the remaining share in favour of Q. Calculate the new profit sharing ratio of P and Q.

CBSECBSE Class XII Board 2022Subjective· 2mImportance★★★★★
✓ Free question

The new profit-sharing ratio of P and Q after R's retirement is 5 : 7.

When a partner retires, the remaining partners gain the retiring partner's share in an agreed proportion. The key is to first determine R's original share, then see how much of it goes to P and how much to Q. The new ratio is simply the sum of each continuing partner's old share plus the share they gain from the retiring partner.

Let's work through it step by step.

Step 1: Identify the old ratio

P, Q, and R share profits in the ratio 3 : 4 : 1. This means:

  • P's old share = 3/8
  • Q's old share = 4/8 = 1/2
  • R's old share = 1/8

Step 2: Understand how R's share is surrendered

R surrenders 1/3rd of his share in favour of P, and the remaining share in favour of Q.

R's total share = 1/8.

  • Share surrendered to P = 1/3 of 1/8 = 1/24
  • Share surrendered to Q = Remaining share = 1/8 - 1/24 = (3/24 - 1/24) = 2/24 = 1/12
Tip

A quick check: 1/24 + 2/24 = 3/24 = 1/8, which is R's full share. So the division is correct.

Step 3: Calculate the new shares of P and Q

  • P's new share = P's old share + share gained from R = 3/8 + 1/24

    Convert 3/8 to denominator 24: 3/8 = 9/24

    So P's new share = 9/24 + 1/24 = 10/24

  • Q's new share = Q's old share + share gained from R = 4/8 + 1/12

    Convert 4/8 to denominator 24: 4/8 = 12/24

    Convert 1/12 to denominator 24: 1/12 = 2/24

    So Q's new share = 12/24 + 2/24 = 14/24

Step 4: Express the new ratio in simplest form

New ratio of P : Q = 10/24 : 14/24 = 10 : 14 = 5 : 7 (dividing both by 2).

Watch out

A common mistake is to forget that the old ratio of the continuing partners remains unchanged for their own share. You must add the gain to the old share, not simply redistribute R's share between P and Q in the gaining ratio. Here, the gaining ratio is 1/24 : 2/24 = 1 : 2, but the new ratio is not the same as the gaining ratio — it's the sum of old share and gain.

✓Final answer

The new profit-sharing ratio of P and Q is 5 : 7.

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