Where does the 1 come from in this problem? The one that is under 1-r. We needed to solve for a? I'm just not sure why they put the 1

() pastries in one hour.

Step-by-step explanation:

This problem involved the concept of rates. A rate is a way of expressing the amount of work done compared to the amount of time it took, to find the pace at which one does the work. To express a rate, the general format used is:      ()

Substitute in the given values:

In the problem, one is asked to find how many pastries can be made in one hour. To find this value, divide the rate by (2.5). This will leave (1) on the time side, and the amount of work done on the (work) side.

() pastries in one hour.