How long should it take a unit to assemble approximately 350 trays at a productivity goal of 4 trays per minute?

To determine how long it will take to assemble approximately 350 trays at a productivity rate of 4 trays per minute, we need to perform some calculations based on these figures.

First, calculate the total time required in minutes to assemble 350 trays. This can be done by dividing the total number of trays by the rate of tray assembly per minute:

350 trays ÷ 4 trays per minute = 87.5 minutes

Now, to convert the total time from minutes to hours and minutes, it's helpful to note that there are 60 minutes in an hour.

Since 87.5 minutes can be broken down as follows:

• 87 minutes is 1 hour and 27 minutes, with the remaining 0.5 minutes being additional time which can be represented as 30 seconds.

However, when looking at the choices provided, the closest and most practical conversion is to round it in terms of hour and full minutes, which makes us understand that 87.5 minutes is approximately 1 hour and 30 minutes.

Thus, the answer that aligns best with the calculated time is 1 hour and 30 minutes, confirming that this is indeed the correct choice.