Question 6 of 58beginner🔧 ApplyNumerical2 marks

The temperature in the high-altitude desert of Ladakh is recorded as 4 °C4 \text{ °C} at noon. By midnight, it drops by 15 °C15 \text{ °C}. What is the midnight temperature?

Correct Answer

-11 °C

Exercise: Exercise Set 3.2 | Q: 1 | (Page 6)
For More Understanding

Explanation

The problem involves the subtraction of integers to find the final temperature. A drop in temperature means we subtract the dropped amount from the initial temperature. Since the drop (15 °C) is greater than the initial positive temperature (4 °C), the result crosses zero and becomes a negative integer, representing a temperature below the freezing point.

Solution Steps

  1. Step 1: Identify the initial temperature at noon = 4 °C4 \text{ °C}

  2. Step 2: Identify the temperature drop by midnight = 15 °C15 \text{ °C}

  3. Step 3: Calculate the midnight temperature = Initial temperature - Temperature drop = 4−15=−11 °C4 - 15 = -11 \text{ °C}

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