Answer
The greatest number of sweaters we can buy is 4.
Work Step by Step
The greatest number of sweaters we can buy is $\frac{200}{45} \approx 4.4 \rightarrow $ 4 sweaters.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.