Question

The temperature drops by 3°C every hour. If the initial temperature was 15°C, what will be the temperature
after 6 hours?
A. 15 − (3 × 6)
C. 15 − (3 ÷ 6)
B. 15 + (3 × 6)

Answer 1

To find the temperature after 6 hours when it drops by 3°C every hour, we can use the formula:

\[
\text{Final Temperature} = \text{Initial Temperature} - (\text{Rate of Drop} \times \text{Time})
\]

Given:
- Initial Temperature = 15°C
- Rate of Drop = 3°C/hour
- Time = 6 hours

So, we calculate:

\[
\text{Final Temperature} = 15 - (3 \times 6)
\]

Now we can compute that:

\[
3 \times 6 = 18
\]

Thus,

\[
\text{Final Temperature} = 15 - 18 = -3°C
\]

From the options you provided, the correct one is:

**A. 15 − (3 × 6)**.