QUESTION

CSAT

Easy

Reasoning

Prelims 2024

a + b means a – b; a – b means a x b; a x b means a ÷ b; a ÷ b; means a + b, then what is the value of $10 + 30 – 100 \times 50 \div 25$ ? (Operations are to be replaced simultaneously)

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Explanation

The expression to evaluate is: $10 + 30 – 100 \times 50 \div 25$

Step 1: Replace operations based on their new definitions:

10 + 30 becomes 10 - 30,
30 – 100 becomes 30 × 100,
100 × 50 becomes 100 ÷ 50,
50 ÷ 25 becomes 50 + 25.

Step 2: Substitute and evaluate: The modified expression becomes: $10 - 30 \times 100 \div 50 + 25$ $= 10 - 30 \times 2 + 25$ $= 10 - 60 + 25$ $= 10 - 35$ $= -25$