S sold to B a parcel of land with an area of 500 square meters at ₱2,000 per square meter. It turns out that the area is only 450 square meters. Has B the right to cancel or rescind the sale even if S is willing to accept a proportionate reduction of the price, or only ₱900,000?

In this scenario, B has the right to cancel or rescind the sale due to the discrepancy in the area of the land. Here are the steps to understand why:

1. Determine the agreed-upon price: The agreed-upon price for the land is ₱2,000 per square meter.

2. Calculate the original total price: Multiply the agreed-upon price per square meter (₱2,000) by the original area of the land (500 square meters). This gives us a total price of ₱1,000,000.

3. Compare the original area with the actual area: The actual area of the land is only 450 square meters, which is 50 square meters less than what was agreed upon.

4. Assess the impact on the price: Since the area is less than what was initially agreed upon, B has the right to cancel or rescind the sale. S's offer of a proportionate reduction in price, or ₱900,000 (₱2,000 x 450 square meters), may not be sufficient to compensate for the discrepancy.

5. Consider legal rights: B can exercise their right to cancel or rescind the sale, even if S is willing to accept a proportionate reduction in price. The discrepancy in the area of the land affects the terms of the agreement, and B has the right to seek a resolution that is fair and in line with the original agreement.

In summary, B has the right to cancel or rescind the sale due to the discrepancy in the area of the land, even if S is willing to accept a proportionate reduction of the price.