mr harris bought 4 for $0.50, mrs clarke bought 21 for $1.00, mr montaro bought 1134 for $2.00 and ms park bought 450 for $1.50. what were they buying?

You'll find out after you correctly solve your math problems.

To determine what Mr. Harris, Mrs. Clarke, Mr. Montaro, and Ms. Park were buying, we can compare the amount they bought with the cost of the items. By calculating the price per item, we can identify the product.

First, let's calculate the price per item for each person:

- Mr. Harris bought 4 items for $0.50, so the price per item is 0.50/4 = $0.125 per item.
- Mrs. Clarke bought 21 items for $1.00, so the price per item is 1.00/21 = $0.0476 per item.
- Mr. Montaro bought 1134 items for $2.00, so the price per item is 2.00/1134 = $0.0018 per item.
- Ms. Park bought 450 items for $1.50, so the price per item is 1.50/450 = $0.0033 per item.

Now let's analyze the results:

- Mr. Harris paid $0.125 per item, which is relatively high compared to the other prices.
- Mrs. Clarke paid $0.0476 per item, which is lower than Mr. Harris' price but significantly higher than Mr. Montaro and Ms. Park's prices.
- Mr. Montaro paid $0.0018 per item, which is extremely low compared to the other prices.
- Ms. Park paid $0.0033 per item, which is slightly higher than Mr. Montaro's price but significantly lower than Mr. Harris and Mrs. Clarke's prices.

Based on these observations, we can conclude that Mr. Harris, Mrs. Clarke, Mr. Montaro, and Ms. Park were likely buying different items.

It is not possible to determine exactly what they were buying without additional information or context about the items or the situation.