Mr. Brown bought 20 apples at 2 per apple. He then sold all at the market for 60. a. Did he make a profit or a loss?

Brown paid for the apples.
He bought 20 apples at $2 per apple.

$$\text{Total Cost} = \text{Number of apples} \times \text{Cost per apple}$$

$\text{Total Cost} = 20 \times \$2 = \$40$

The total cost was $40. He sold all the apples for$60. Since the selling price ($60) is greater than the total cost ($40), Mr. Brown made a profit.

a. Did he make a profit or a loss?
He made a profit.

$\boxed{\text{Profit}}$