Question

last week, the attendance at the golden county museum of history was 320 people. next week, the attendance is expected to increase by 85% for a wildcat exhibit. find the attendance expected next week.
step 2
estimate the final amount.
100% + 85% = □%
?% of 320 people is about □ people.

Explanation:

Step1: Calculate total percentage

$100\% + 85\% = 185\%$

Step2: Estimate 185% of 320

First, break down 185%: $100\% \text{ of } 320 = 320$, $80\% \text{ of } 320 = 0.8 \times 320 = 256$, $5\% \text{ of } 320 = 0.05 \times 320 = 16$. Add them: $320 + 256 + 16 = 592$. For estimation, we can also approximate $185\% \approx 1.85$, so $1.85 \times 320 \approx 592$ (or a close estimate like 600 is also reasonable, but precise calculation gives 592).

Answer:

$100\% + 85\% = \boldsymbol{185}\%$
185% of 320 people is about $\boldsymbol{592}$ people.