Difficulty: Medium
Correct Answer: cannot be determined
Explanation:
Introduction / Context:
This question appears to be about averages and relative differences in wealth among three people: Mittal, Ambani and Singhania. While the problem provides the overall average property value and a statement about how Mittal and Singhania's properties relate to their own average, the critical issue is whether this extra statement actually adds any usable constraint. The task is to decide if the property of Ambani can be uniquely determined.
Given Data / Assumptions:
Concept / Approach:
We need to translate the given descriptive relationship between M and S into algebra. The average property of Singhania and Mittal is (M + S) / 2. The phrase can be read as: the difference M - S equals the difference between M and the average of M and S. That is:
M - S = M - (M + S) / 2.
We must check whether this gives a new constraint or is an identity that holds for all values of M and S, in which case it does not help determine A.
Step-by-Step Solution:
Step 1: Write the average of Mittal and Singhania as (M + S) / 2.
Step 2: The property of Singhania is as much less than M as M is greater than this average. So write: M - S = M - (M + S) / 2.
Step 3: Simplify the right side: M - (M + S) / 2 = (2M - (M + S)) / 2 = (M - S) / 2.
Step 4: So the equation becomes M - S = (M - S) / 2.
Step 5: Multiply both sides by 2: 2(M - S) = M - S ⇒ M - S = 0.
Step 6: Therefore, M = S.
Step 7: We now know only that M and S are equal, but we do not know their individual values.
Step 8: From M + A + S = 33,333 and M = S, we get 2M + A = 33,333.
Step 9: This is a single equation with two unknowns M and A, so there are infinitely many possible pairs (M, A) that satisfy it.
Verification / Alternative check:
For example, if M = S = 10,000, then A = 33,333 - 20,000 = 13,333. If M = S = 12,000, then A = 33,333 - 24,000 = 9,333. Both choices satisfy the known conditions. Because multiple different values for A are possible while still satisfying all given statements, the value of Ambani's property cannot be uniquely determined from the information provided.
Why Other Options Are Wrong:
Options such as Rs. 111 crore, Rs. 1111 crore or Rs. 11,111 crore are specific numerical values. To choose any of these, the data would need to pin down a single unique solution for A. However, the conditions only fix the sum M + A + S and force M = S, leaving many possibilities for M and A. The option Rs. 22,222 crore is also just a single arbitrary value without support. Therefore, no specific numeric choice is justified.
Common Pitfalls:
A major pitfall is interpreting the worded condition as adding meaningful information when, after simplification, it either becomes an identity or forces only a weak condition like M = S. Some students may assume symmetry and guess that Ambani's property equals the average, but this is not required by the equations. Others may over interpret the wording without checking the algebra. Always convert word conditions to equations and see how many independent equations you actually have.
Final Answer:
The information is not sufficient to determine Ambani's property uniquely, so the correct choice is cannot be determined.
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