हिंदी में जवाब दो: The temperature at a hill station was 5 °C at noon. It fell by 3 °C every hour for the next 4 hours. What was the temperature after 4 hours? Represent the change on a number line.

Step 1: Initial Temperature

The problem states that the temperature at noon was $5 \text{ °C}$. This is our starting point for the temperature calculation.

Step 2: Total Temperature Drop

The temperature fell by $3 \text{ °C}$ every hour for $4$ hours. To find the total drop in temperature, we multiply the hourly drop by the number of hours.

Step 3: Calculate Total Drop

Multiplying $3 \text{ °C}$ by $4$ hours gives a total temperature drop of $12 \text{ °C}$.

Step 4: Final Temperature

To find the final temperature, we subtract the total temperature drop from the initial temperature.

Step 5: Resulting Temperature

Subtracting $12 \text{ °C}$ from $5 \text{ °C}$ gives us $-7 \text{ °C}$. This is the temperature after 4 hours.

More from this chapter

• हिंदी में जवाब दो: A submarine is at a depth of 120 m below sea level. It rises by 45 m and then descends by 30 m. At what depth is it now?
• हिंदी में जवाब दो: Mark the following on a number line and state which is the greatest: −4, 2, −1, 3 and 0.

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