QUESTION

CSAT

Medium

Maths

Prelims 2024

Two persons P and Q enter into a business. P puts ₹ 14,00014,000 more than Q, but P has invested for 88 months and Q has invested for 1010 months. If P's share is ₹ 400400 more than Q's share out of the total profit of ₹ 2,0002,000, what is the capital contributed by P?

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Explanation

Let's solve this step-by-step.

Step 1: Set Up the Variables

  • Let Q's investment be ₹ XX, which was invested for 10 months.
  • P invested ₹ (X+14,000)(X + 14,000) for 8 months.

Step 2: Determine the Shares of Profit The total profit from the business is ₹ 2,000.

  • We are given that P's share is ₹ 1,200.
  • Q's share is then ₹ 800 (since 2,0001,200=8002,000 - 1,200 = 800).

Step 3: Set Up the Profit-Sharing Ratio Equation Since profit is divided in the ratio of each person’s contribution (capital × time), we can set up the following equation:

8×(X+14,000)÷(10×X)=1,200÷8008 \times (X + 14,000) \div (10 \times X) = 1,200 \div 800

Step 4: Simplify the Equation

8×(X+14,000)÷(10×X)=3÷28 \times (X + 14,000) \div (10 \times X) = 3 \div 2

2×8×(X+14,000)=3×10×X2 \times 8 \times (X + 14,000) = 3 \times 10 \times X

16X+224,000=30X16X + 224,000 = 30X

Step 5: Solve for X

30X16X=224,00030X - 16X = 224,000

14X=224,00014X = 224,000

X=16,000X = 16,000

Thus, Q’s investment is ₹ 16,000.

Step 6: Calculate P’s Investment Since P invested ₹ 14,000 more than Q:

P=X+14,000=16,000+14,000=30,000P = X + 14,000 = 16,000 + 14,000 = 30,000

The capital contributed by P is ₹ 30,000.

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