Custom symbols — If T = ×, U = −, X = ÷, and W = +, evaluate (50 X 2) W (28 T 4)
Verbal Reasoning
Mathematical Operations
Difficulty: Easy
Choose an option
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A142
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B158
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C137
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D163
Answer
Correct Answer: 137
Explanation
Introduction / Context:Symbol mapping questions require careful replacement followed by normal arithmetic precedence. Brackets must be evaluated first.
Given Data / Assumptions:
- T → multiply (×)
- U → minus (−)
- X → divide (÷)
- W → plus (+)
- Expression: (50 X 2) W (28 T 4)
Concept / Approach:Replace symbols, compute bracketed parts, then add.
Step-by-Step Solution:
1) Replace: (50 ÷ 2) + (28 × 4).2) Inside brackets: 50 ÷ 2 = 25; 28 × 4 = 112.3) Sum: 25 + 112 = 137.Verification / Alternative check:Compute again independently: both parts 25 and 112 are straightforward, summing to 137.
Why Other Options Are Wrong:
- Values like 142/158/163 stem from swapping one of the mappings or adding before multiplying.
Common Pitfalls:
- Forgetting that X means division here.
Final Answer:137