Question

A cook starts baking pies at the time shown on the clock below. The first pie is done 25 minutes later, and the second pie is done 30 minutes after the first pie. Which clock shows when the second pie is done?

a) Clock A
b) Clock B
c) Clock C
d) Clock D

Answer 1

To find when the second pie is done, first add 25 minutes to the clock showing when the cook starts baking to get the time the first pie is done; then add an additional 30 minutes to determine the completion time of the second pie.

Step-by-step explanation:

In answering the student's question about when the second pie will be done, we consider the time the first pie is finished and then add an additional 30 minutes for the second pie. Initially, after the first pie is done, we add 25 minutes to the start time given on the clock. Following that, the second pie takes 30 more minutes to finish. To find when the second pie is done, we undergo two time addition steps. First, we add 25 minutes to determine when the first pie is done. Then, we add another 30 minutes to that time to find out when the second pie is finished. This sequential addition of time allows us to find the correct point in time on the clock, and identify the correct clock option out of A, B, C, or D that shows the right time for when the second pie is finished.