Final answer:
Austin's kitten, Purrty, ate 1.5 cans of cat food yesterday after adding up the amounts consumed in the morning, afternoon, and evening.
Step-by-step explanation:
Austin wants to determine how many cans of cat food Purrty, his kitten, ate yesterday. To calculate this, we need to add up the amounts eaten during the different parts of the day. In the morning, Purrty ate 0.5 of a can, in the afternoon 25% of a can (which is equal to 0.25 of a can), and in the evening another 0.75 of a can.
To find the total, we add these amounts together: 0.5 + 0.25 + 0.75 = 1.5 cans of cat food in total.