Question

please answer this question



A certain freezing process requires that room temperature be lowered from 40 degree celsius at the raye of 5 degree celsius every hour. what will be the room temperature for 10 hours after the process begins​

Answer 1

$\bigstar$ Given:

• Initial temperature = $40^{o} \: C$
• Change in temperature per hour = $-5^{o}\: C$

$\bigstar$ To Find:

• Room temperature after 10 hours of freezing process.

$\bigstar$ Solution:

According to the question,

Let us take the lowered temperature as negative,

So, change in temperature after 10 hours = $(-5) \times 10 = -50^{o}\: C$

∴ The room temperature after 10 hours of freezing process = $40^{o}\: C + (-50^{o}\: C)$

$\implies \boxed{\underline{\underline{-10^{o}\: C}}}$

Hence, the room temperature for 10 hours after the process begins​ will be $-10^{o} \: C$