Question

On the assembly line it takes 2 ½ minutes to complete task one, 3 minutes 10 seconds to complete task two and 1 minute to complete the last task to make an item.How many items can be completed in 25 minutes?

Answer 1

Task 1 ----- $2 \frac{1}{2}$minutes
Task 2 ----- 3 min 10 sec = 3+10/60 = $3\frac{1}{6}$ minutes
Task 3 ----- 1 min
Total time to make 1 item = $2 \frac{1}{2}$ + $3 \frac{1}{6}$ +1 = $6 \frac{2}{3}$minutes

In 25 minutes;

Number of items made = 25/(6 2/3) = 3.75 items = 3 items (since only a fully assembly can be regarded as an item).<span />