
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Hannah can paint a room in $6$ hours, while Sarah can paint the same room in $8$ hours. However, at temperatures above $25^\circ C$, their combined painting rate decreases by $10\%$. On a particular day, it's $28^\circ C$, and they took a combined $1.5$-hour break. Let $t$ be the total time, in hours, required for them to finish painting the room together, including the break. What equation correctly expresses $t$?
A) $\left(\frac{21}{80}\right)(t-1.5)=1$
B) $\left(\frac{21}{80}\right)t-1.5=1$
C) $\left(\frac{21}{80}\right)t=1$
D) $\left(\frac{21}{80}\right)(t+1.5)=1$

Present the answer in LaTex format: \boxed{Your answer}
user