at a price of $5 sam buys 10 units of a product; when the price increases to $6

Question

at a price of $5 sam buys 10 units of a product; when the price increases to $6 sam buys 8 units. Martha says sam's demand has decreased .. is martha correct

1. Yes Martha is correct, sams demand has decreased
2. no, martha is incorrect - sams demand has increased
3. no martha is incorrect, sam's quanity demand has decreased and his demand has not changed.
4. no martha is incorrect, sam's quantity demand has increased, and his demand has increased
5. no martha is incorrect, sames demand has increased, and his quanity demanded has decreased

Explanation / Answer

3. no martha is incorrect, sam's quanity demand has decreased and his demand has not changed.

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