This year there were 2802 deaths related to road construction zones in a country. If this is an increase of 90​% in the last five​ years, what was the number of deaths five years​ ago?
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Part 1
Five years​ ago, there were enter your response here deaths.
​(Round to the nearest whole number as​ needed.)

To find the number of deaths five years ago, we need to reverse the 90% increase to calculate the original number of deaths. We know that this year's deaths (2802) represent 190% (100% + 90%) of the deaths from five years ago.

We can set up the following equation:

\[
2802 = 1.90 \times \text{deaths five years ago}
\]

Let \( x \) be the number of deaths five years ago. Then:

\[
2802 = 1.90x
\]

To solve for \( x \):

\[
x = \frac{2802}{1.90}
\]

Now, let's calculate:

\[
x = \frac{2802}{1.90} \approx 1475.79
\]

Rounding to the nearest whole number:

\[
x \approx 1476
\]

So, the number of deaths five years ago was approximately **1476**.

Would you like any more details or clarification?

Here are 5 related questions you might find interesting:
1. What would the number of deaths be if the increase had been 50% instead of 90%?
2. How would the result change if the number of deaths this year was 3000 instead of 2802?
3. What is the percentage increase if the deaths rose from 1000 to 2802 in five years?
4. If the number of deaths continues to increase at 90% over the next five years, how many deaths would be expected?
5. What factors could contribute to such a significant increase in road construction zone deaths?

**Tip:** Always identify the percentage increase or decrease clearly before attempting to reverse it in calculations!

This year there were 2802 deaths related to road construction zones in a country. If this is an increase of 90% in the last five years, what was the number of deaths five years ago? (Round to the nearest whole number as needed.)

Learn how to calculate the number of deaths five years ago, given that there were 2802 deaths this year and a 90% increase over the past five years. This solution covers percentage increase calculations and proportional reasoning. Suitable for students in Grades 7-9.

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