Question

Aiko bakes croissants for a community center bake sale. She already has a number

of batches baked from the day before. After 2.5 hours, Aiko has a total of 8 batches.
After 4 hours, she has a total of 11 batches. Determine the number of batches Aiko
baked per hour.

Answer 1

You’d be solving the equation 2.5/1 = 8/x. 8 divided by 2.5 equals 3.2. Therefore, Aiko baked 3.2 batches of cookies per hour

Answer 2

• Aiko baked 2 batches per hour.

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Find the difference in time and the difference in the number of batches.

The two numbers will help to find the rate of change in that time interval.

This is same as finding the slope of a line with points (2.5, 8) and (4, 11):

• m = (11 - 8)/(4 - 2.5) = 3/1.5 = 2