Hello,
So the total length of the road is 16.5km (decimal form). Workers can repair 2.25 per week. To get the number of weeks they need to repair the road is to divide the total with per week. The equation would be:
![16.5 / 2.25 = 7.33](https://img.qammunity.org/2019/formulas/mathematics/middle-school/78flhep35o1aearsk70nj12ejhq422sy2k.png)
or with fraction
16 2/4 / 2 1/4 = 7 1/3
Answer: The workers would need 7.33 weeks to repair the road.
Hope this helps.
r3t40